hybridfree/eevblog-posts huggingface dataset:
Replacement for obsolete IC???? - Page 1
Forum section: electronics / repair

author: watchmaker
author_rank: Unknown
timestamp: March 12, 2024, 09:54:06 pm
content: I need to replace a 74HC132P. Is it appropriate to try a 74HC132N? Both are DIP.Thanks!

author: Kim Christensen
author_rank: Super Contributor
timestamp: March 12, 2024, 10:04:12 pm
content: I've always thought that the P or N suffix was the package type. So if they are both DIP, it won't make a difference.

author: TimFox
author_rank: Super Contributor
timestamp: March 12, 2024, 10:10:09 pm
content: Apparently, the "P" denotes the TSSOP package, which has quite different dimensions than the PDIP package for the "N" suffix.

author: fzabkar
author_rank: Super Contributor
timestamp: March 12, 2024, 10:19:14 pm
content: Quote from: TimFox on March 12, 2024, 10:10:09 pmhttps://images.tokopedia.net/img/cache/700/product-1/2018/8/16/3284559/3284559_01bab711-fe71-4fa3-b829-d174c0286f61.jpghttps://http2.mlstatic.com/D_NQ_NP_938151-MLB72575664368_112023-O.webp

author: Jwillis
author_rank: Super Contributor
timestamp: March 12, 2024, 10:30:04 pm
content: If you can't get the correct package or the package has become obsolete, get theseDIP Adapter Converter Plateor similar from your favourite distributor.Some of the kits have the Dupont pins as well. The kits are just so handy to have around.

author: helius
author_rank: Super Contributor
timestamp: March 12, 2024, 10:33:18 pm
content: The package suffixes are not entirely standardized between manufacturers.What was commonly done for TTL logic chips was to package them in both plastic (epoxy) as well as hermetic ceramic and glass. The latter is impervious to moisture and reactive gasses and more thermally conductive, which was required in some industrial or aerospace applications. The plastic ("PDIP": Plastic Dual In-line Package) versions are much cheaper, of course.For some higher pin-count chips, there were also "Shrink DIP" and "Staggered/Dual row DIP" but those aren't relevant to a 14-pin logic.When reading the thread title, I thought you meant you were searching for an in-production substitute for an obsolete chip. 74HC logic may be compatible with AC, ACT, or even ALS.

author: watchmaker
author_rank: Unknown
timestamp: March 12, 2024, 11:00:04 pm
content: WOW. Thank you all. Good to know not all DIPs are the same (there is a joke in there somewhere).JWillis, I will try out those adapters.Being inexperienced, I want to stay within the same chip family right now.

author: Kim Christensen
author_rank: Super Contributor
timestamp: March 12, 2024, 11:27:24 pm
content: You can still buy the DIP version from Digikey and other suppliers:Toshiba versionTi version(Broader temperature range spec than the one above)As posted by helius, the suffix is not standard across manufacturers. So just search for "74HC132" at your favorite supplier and ensure it's in a DIP package.
Replacement for the Yamaha AVENTAGE RX-A1080 VFD  - Page 1
Forum section: electronics / repair

author: rfengg
author_rank: Regular Contributor
timestamp: September 22, 2025, 05:13:20 pm
content: Hi there,The VFD on my Yamaha AVENTAGE RX-A1080 is on its way out and I was looking to replace the same. The part number as per the SM is 023MT006GINK but searching the web brings up no hits other than a supplier in the UK. Does anyone know the manufacturer of this VFD or where I can get the replacement for this in the US? The unit is only 5 years old and surprising that the VFD has deteriorated over these past 5 years.The official Yamaha US spares site have this "part" but they will only sell it as a complete front display PCB for which they are asking for close to $300Don't want to try the rejuvenation path unless I really need to.......thanks

author: coromonadalix
author_rank: Super Contributor
timestamp: September 22, 2025, 06:29:13 pm
content: https://spares4teka.co.uk/yamaha-display-unit-zx125100-fluorescent-display-023mt006gink-SKU1276214this was your uk seller ?sadly i think it is a yamaha display ...order it and import it ...this one ?https://www.ued.net/ued/viewItemAction.do?itemCode=YMAZX125100but says non stocked ....i dont think you have many choices left

author: rfengg
author_rank: Regular Contributor
timestamp: September 22, 2025, 06:41:33 pm
content: @coromonadalix : Thanks for the info.https://spares4teka.co.ukwas indeed the UK seller when I googled for the VFD but I was not aware of ued.net, so will give them a try as I don't mind waiting till 10/13/25.
Replacement LCD display for manometer - Page 1
Forum section: electronics / repair

author: macalla
author_rank: Contributor
timestamp: August 21, 2021, 06:11:09 pm
content: Does anyone know where to get a replacement LCD module for a General Tools DM8252 manometer?I accidently got the meter wet so I took it apart to dry, then I immediately broke the glass display by dropping it on the floor.A corner of the glass broke off so several of the contact points embedded in the glass are gone (it connects to the pcb with an elastomeric zebra strip).Its pretty much new so I'd really like to fix it rather than scrap it.Thanks!

author: james_s
author_rank: Super Contributor
timestamp: August 21, 2021, 08:58:01 pm
content: It's likely that it's a custom part, the manufacture will be the only source for a new one if they will even sell parts at all. Your other option is to find a broken or beat up instrument of the same model that has an intact display.

author: jpanhalt
author_rank: Super Contributor
timestamp: August 21, 2021, 09:33:54 pm
content: Welcome to EEVBlog.Agreed. Probably made in large volume for that design. Try General Tools for a replacement part. Worth a try, but plan on buying a new or used one. Save the rest, as those parts may come in handy later.This may be of interest, if it works:https://www.ebay.com/itm/224135666507?epid=1309080585&hash=item342f86db4b:g:Xk4AAOSwr0VfR90R

author: macalla
author_rank: Contributor
timestamp: August 21, 2021, 11:43:00 pm
content: hey thanks for the ebay tip. Might be the best way to go.
replacement LCD for 7129 voltmeter chip - Page 1
Forum section: electronics / repair

author: jmelson
author_rank: Super Contributor
timestamp: May 31, 2019, 08:53:54 pm
content: I have a pretty fancy photometer that uses the ubiquitous 7129CPL chip and a fairly big 4-1/2 digit LCD that has apparently gone bad. Does anybody know where to get replacement LCDs? It is in a DIP sort-of arrangement, with 40 pins, and is 3.5" x 1.5"It MIGHT have special range indicators on the right edge, but I guess we could live without those. The indicators to the right of the digits are uW and nW, and above the digits LOW BAT and A/W.The digits are probably 0.6" tall.Thanks for any hints,Jon

author: floobydust
author_rank: Super Contributor
timestamp: May 31, 2019, 09:10:42 pm
content: Look for a part number or any markings on the LCD. Usually on the underbelly.There's many different manufacturers (and different pinouts) but it is likely a customized part with the units uW nW etc.

author: CJay
author_rank: Super Contributor
timestamp: May 31, 2019, 10:42:07 pm
content: https://uk.farnell.com/c/optoelectronics-displays/displays/lcd-displays/7-segment-lcd-displays

author: jmelson
author_rank: Super Contributor
timestamp: June 08, 2019, 11:55:49 pm
content: Interesting result. So, while poking around trying to determine if a pin was no longer connected to the tin oxide LCD electrodes, the display started looking better. After about an hour of operation, it was basically fully back to normal.I had not even powered this unit on in ten years. I'm guessing an electrolytic cap had started getting leaky, and took an hour to reform the dielectric. Once voltages were back to normal, it worked OK.Jon
Replacement LCD module, what should I search for?  - Page 1
Forum section: electronics / repair

author: kentsor
author_rank: Newbie
timestamp: April 21, 2021, 12:02:31 am
content: I'm hoping someone can tell me what to search for to find a replacement for a LCD from a Sirius XM TTR1 internet radio whose backlight has failed. The markings on the back "102604508P D 4" is not yielding any hitsThe resolution seems to be 128x64 of which there are of course many, many on aliexpress. The LCD and backlight is simply sandwiched between two thin plates of glass. Thickness is on the order of 3mm. There seems to be 20 traces on the flexible cable.What would a module of this construction be called, and what is the interface that I need?Thanks in advance

author: dc101
author_rank: Regular Contributor
timestamp: April 21, 2021, 01:15:59 am
content: Honestly your best bet would probably be to buy one off eBay and swap the LCD panel. It seems this problem is not uncommon with this unit. Good luck!Cheers-Tim

author: kentsor
author_rank: Newbie
timestamp: April 21, 2021, 01:18:07 am
content: Yeah, I considered that too. The problem is that any TTR1 for sale is listed as "for parts" because... you guessed it: the display is dead.

author: dc101
author_rank: Regular Contributor
timestamp: April 21, 2021, 01:23:08 am
content: I noticed that when I was browsing eBay. There were some posts in other forums as well regarding the same issue. More concerning is this comment on Amazon:Quotehttps://www.amazon.com/gp/customer-reviews/R35PVSLH42W2AL/ref=cm_cr_arp_d_viewpnt?ie=UTF8&ASIN=B002Q0W82A#R35PVSLH42W2ALI've never used any satellite radio service before, so I have no idea if this is true or not, but I'd hate for you to go through all the effort of fixing your LCD only to find out it still won't work.Cheers-Tim

author: kentsor
author_rank: Newbie
timestamp: April 21, 2021, 02:31:55 am
content: Oh, that's interesting. It was last used a month ago so, yes it would indeed suck to find they bricked it in the meantime.Thanks for finding that post.
Replacement LED FPC Connector for Motorola Z4 Play (XT1980-3) - Page 1
Forum section: electronics / repair

author: ceneblock
author_rank: Newbie
timestamp: December 13, 2020, 03:14:09 am
content: Hello everyone,I seem to have messed up when replacing a phone screen on my phone and shattered the connector that connects the LCD to the mainboard. I was hoping that I might be able to get some help identifying it.From what I counted, this is a 51 position FPC cable that is 10.5 mm across. I've measured out the latch of the connector to be 11mm (11.1mm in the picture); however, searching on Mouser and Digikey has shown no such luck. However, there is a probably a good chance that I've messed up something along the way when trying to search.I've attached pictures of both the cable and what's left of the connector. Hopefully someone can help me determine some information about this connector so I can fix my phone. If there is any additional information that I can provide, then please let me know!Thanks!
Replacement mosfet for Sony LCD TV - Page 1
Forum section: electronics / repair

author: abhi1981
author_rank: Regular Contributor
timestamp: March 23, 2025, 08:59:02 am
content: Hello,The attached circuit is part of a Sony lcd tv mainboard. I accidently blew up mosfet Q4005 (RSQ035P03TR) while testing for voltagesThe original mosfet is available but quite expensive because of shipping charges.Please suggest a cheaper, more readily available mosfet, even in a different package.

author: MathWizard
author_rank: Super Contributor
timestamp: March 24, 2025, 02:47:26 am
content: Here's the datasheethttps://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1854/rsq035p03.pdfIDK the names of any to recommend, but overall it looks like a pretty typical mosfet, and yeah there's no reason to spend much on it. If it owned the TV, I'd look up P-CH 30-50V, 4A to 5A mosfet's on ebay, and find something suitable or close enough. There's different types too, and not all have the same body-diode structure, I'll leave that to the experts.The current rating 3.5A and 14A pulsed current ratings are pretty important. So is the 30V Drain-Souce rating and 20V Gate-Source voltage. Something similar is ok, just don't go lower, (it might be ok in some circuits, or an emergency).And the gate-source turn-on / threshold voltage can be pretty important, but the mosfet's will be driven like a switch, with a lot of VGS, so something within a few volts might still be fine, like -5V. But yeah the closer to the -1V to -2.5V the better, especially when being run from microcontrollers, with small voltage rails. And the there will be some smaller the better, voltage drop across DS, and some RDSon, they had say 50-100miliohms.Then there's all the time varying related things like gate capacitance or gate charge, or storage time, and transconductance. All I would do is try to find something similar. Or someone on here will know a suitable from memory, I'm just getting deeper into them myself.

author: abhi1981
author_rank: Regular Contributor
timestamp: March 26, 2025, 08:56:37 am
content: There is also an ESD diode in this particular mosfet model. Is it necessary?[ Attachment Invalid Or Does Not Exist ]

author: tom66
author_rank: Super Contributor
timestamp: March 26, 2025, 10:40:35 am
content: Probably not. The Vcc is 12V to the converter input and the gate will be pulled to ground, so expect maximum Vgs to be around 12V. As long as new MOSFET has 20V gate-source or better, it should be OK.
Replacement motor start capacitor question - Page 1
Forum section: electronics / repair

author: Kevin H
author_rank: Contributor
timestamp: June 17, 2019, 05:55:35 am
content: Hi all,My Hoover tumble drier won't start, but it I take the top off it and give the drum a helping hand to get it going it works fine, so I figure it is the motor start cap that is failing.It's 7uF +/-5% tolerance, 450V ACWould it be okay to replace it with a 7.5uF cap +/-5% tolerance, 450V AC ?UPDATE: Actually it's a motor running capacitor, not a motor start cap.

author: bob91343
author_rank: Super Contributor
timestamp: June 17, 2019, 06:08:40 am
content: Not critical at all.
Replacement NTC with narow transition region - Page 1
Forum section: electronics / repair

author: elekorsi
author_rank: Regular Contributor
timestamp: January 21, 2021, 05:21:32 pm
content: Hi to everyone,on the bench i have a board which uses Moxie TS3-75 for the temperature protection. It is a NTC in a TO18 package and has a very narrow transition region around 75°C. You can see in the attached datasheet. The NTC is faulty as it is floating around 35kohm at room temperature. Should be at around 300kohm according to datasheet.I also included a picture of the NTC desoldered and how it is squeezed against a heatsink, so you can see how much space is there for improvisation.The problem is that i cannot find an appropriate substitution for it. Any idea?

author: Haenk
author_rank: Super Contributor
timestamp: January 21, 2021, 06:11:33 pm
content: ebay Germany:https://www.ebay.de/itm/193543181578(Noticed he does only ship to Germany; so you need to ask him about shipping - should not be that hard I guess...)

author: elekorsi
author_rank: Regular Contributor
timestamp: January 21, 2021, 07:17:02 pm
content: Thanks for that! I did send him a meassage if he would be so kind to send it here, we will see.It is strange that if i search "TS3-75" on ebay.de, i get 0 results... I can only see this item with the link you pasted

author: Haenk
author_rank: Super Contributor
timestamp: January 21, 2021, 10:25:38 pm
content: Quote from: elekorsi on January 21, 2021, 07:17:02 pmebay hides items that do not ship to your country...

author: elekorsi
author_rank: Regular Contributor
timestamp: January 23, 2021, 07:55:45 am
content: Yeah the seller changed that after i wrote him a message, so I was able to order it.Thanks for the help!
Replacement of a Chopper Transformer - Page 1
Forum section: electronics / repair

author: Mani556
author_rank: Newbie
timestamp: January 02, 2025, 08:39:36 am
content: i am biomedical engineer in a hospital and i am repairing an EMG Machine, firstly it was not generation current for stimulation of muscles i opened the board and found that 1 chopper transforemer is faulty.written on it is Cramer 1826 A2273.i have checked online and also on the cramer website but i cannot find replacement for this chopper.can anyone help me guide me in this regard please.i shall be very thankful.

author: squadchannel
author_rank: Frequent Contributor
timestamp: January 02, 2025, 08:53:57 am
content: Do not tamper with medical equipment.

author: Xena E
author_rank: Frequent Contributor
timestamp: January 02, 2025, 09:40:13 am
content: https://cramercoil.com/Use the enquiry form, if they cant help, no one will.

author: Mani556
author_rank: Newbie
timestamp: January 02, 2025, 09:43:24 am
content: i already did, but no reply

author: Xena E
author_rank: Frequent Contributor
timestamp: January 02, 2025, 11:07:22 am
content: If this item has value, consider getting it repaired/rewound.Costly though.Crammer will reply to most enquiries,eventually. In this instance though they will probably direct you to the manufacturer of the device if it was a bespoke design.X

author: inse
author_rank: Super Contributor
timestamp: January 02, 2025, 11:20:00 am
content: How did you determine the transformer being at fault?You may post a photo of the device as well.

author: Mani556
author_rank: Newbie
timestamp: January 02, 2025, 11:40:10 am
content: it is not giving continuity on one side

author: inse
author_rank: Super Contributor
timestamp: January 02, 2025, 11:47:05 am
content: Probably the winding is broken at the pin, maybe it can be fixed if accessible
Replacement of burned out mosfet on graphics card - Page 1
Forum section: electronics / repair

author: DarielFer20
author_rank: Newbie
timestamp: June 12, 2025, 11:40:32 pm
content: I have a gtx 980 ti which a mosfet is burned, this comes out of the auxiliary power supply of the graphics card.The mosfet is an EMB20P03V and I wanted to replace it with a commercially available one, the AO4407.Would this mosfet work for me? Should I replace both with the same mosfet?I am trying to learn and any comments would be appreciated, thank you very much!
Replacement of S2512NH Help please. - Page 1
Forum section: electronics / repair

author: eurgenca
author_rank: Regular Contributor
timestamp: June 08, 2020, 08:46:08 am
content: Hello.I need help about replacement of thyristor S2512NH.This thyristor is 25A 800V and Igt is 25 - 50mA.So I can find replacement (2n6509) but Igt is max 30mA.Is this Igt problem or I must find same Igt current?If someone have any idea for crossreference of S2512nh will be nice.Regards, Sebastijan.

author: eurgenca
author_rank: Regular Contributor
timestamp: June 08, 2020, 06:05:46 pm
content: Hello.Can someone please confirm if this placement is good enough.Original:https://www.datasheetarchive.com/pdf/download.php?id=7798c070d18b607b13a45202cc10ca57b7fee3&type=M&term=S2512NHReplacement:https://pdf1.alldatasheet.com/datasheet-pdf/view/104172/IXYS/CS19-08HO1.htmlThanks.

author: PlasmaArcEng
author_rank: Newbie
timestamp: June 11, 2020, 05:47:23 am
content: The specs look pretty close to me

author: eurgenca
author_rank: Regular Contributor
timestamp: June 14, 2020, 06:03:13 am
content: OK. Thanks.
Replacement part for LED package with 3 chips (IKEA JETSTRÖM panel)? - Page 1
Forum section: electronics / repair

author: none
author_rank: Contributor
timestamp: March 09, 2025, 02:05:19 pm
content: I've messed with a JETSTRÖMhttps://www.ikea.com/au/en/p/jetstroem-led-ceiling-light-panel-smart-dimmable-white-spectrum-80536026/that drives two sets of LEDs ( (WW+CW) * 6 parallel strips * 2 strings of 5 LEDs ) and fried one CW LED. It contains 3 chips/dies (see attached photo).I think the forward voltage when the dies start to emit was 7 V or so.The burned chips affect a whole segment (5 LEDs) such that at lowest setting it is much brighter.I found very few manufacturers of LEDs with multiple chips, but the specified forward voltage did not match (6 or 9 V) - and now I've "lost" the browser tab with that source :-/Before messing around with 3 individual LEDs, I was hoping to find a matching part.. can you help?

author: Swake
author_rank: Frequent Contributor
timestamp: March 13, 2025, 08:46:17 am
content: LED's need a current source.To select a new LED you'll have to discover (measure) how much current is going through it in this circuit.Your picture does not provide much information that we can use. How big is this thing? What is the exact package?

author: none
author_rank: Contributor
timestamp: March 23, 2025, 09:58:46 am
content: Probably 2835 / 3528. I'll try 6 V and 9 V ones from Aliexpress and hope for the best. Thanks!
Replacement peltier / TEC for a PCR machine - Page 1
Forum section: electronics / repair

author: TheAmmoniacal
author_rank: Unknown
timestamp: February 26, 2020, 04:21:19 pm
content: I'm trying to repair a PCR machine in our lab that suddenly stopped working, giving a "heat pump failure" error (ironically).The fault was very obvious when I disassembled the unit, one of the two peltiers is both burnt and cracked (see attached picture).Now I need help finding a drop-in replacement peltier, they measure 50 x 50 mm on the side with the grid pattern, 53-54 mm x 50 mm on the other side where the wires are attached.The LCR meter reads 1.37 ohm on the working unit, they are both wired in series to a power rail inside the machine measuring 34-36 V (no load).They must be rated for 100 C or higher. Neither peltier has any markings on them.I've looked at the "Power Cycling" series of peltiers from Laird which is made for this purpose (PCR machines), but none seem to match this one?
Replacement pogo pins for Keysight 42941A - Page 1
Forum section: electronics / repair

author: owiecc
author_rank: Frequent Contributor
timestamp: September 08, 2023, 08:15:28 am
content: I need to replace a pogo pin that goes on the tip of the Keysight 42941A. Do you have a good distributor of these pins? Pin diameter is 0.67mm and the length is around 15mm (don't know precisely because all the pins I have are broken).Keysight sells them but I would prefer a cheaper sourceKeysight 42941-60004

author: perdrix
author_rank: Frequent Contributor
timestamp: September 08, 2023, 06:50:09 pm
content: I ordered a pack of 100 P50-B1 pogo pins from eBay for the grand sum of GBP3.35 (about USD4). ...See this thread:https://www.eevblog.com/forum/testgear/spring-tips-for-pmk-pml-711-a-or-similar-(e-g-lecroy-pp008)/David

author: owiecc
author_rank: Frequent Contributor
timestamp: September 14, 2023, 09:38:12 pm
content: Thanks, they do look very similar. Will try them and report back if they fit.
Replacement potentiometer for Creative P380 speakers - Page 1
Forum section: electronics / repair

author: hanakp
author_rank: Regular Contributor
timestamp: December 09, 2019, 01:12:01 pm
content: I'm almost embarrassed to post such trivial repair, but I haven't found a working solution anywhere else around the web, so maybe somebody will find it useful. It's about volume potentiometer in Creative Labs Inspire P380 speakers, which is located in separate "pod" with cables. If you disassemble it, you will find a thumb-type potentiometer on a small PCB with part number MS0550B. The tricky part was to find a replacement one. In the end, I found only one suitable candidate that could be bought in small quantities: Alps RK10J12E0A0A which is currently in stock at Mouser:https://cz.mouser.com/ProductDetail/ALPS/RK10J12E0A0A?qs=sGAEpiMZZMtC25l1F4XBUza7emsVrz94R0Ytc5Dn%2F54%3DThe new pot has much thinner knob and shorter leads, so I'm not sure if the solder joints won't crack prematurely. Maybe it would help to glue it to the board. But apart from that, the pot is mechanically and electrically identical to the original one. The original pot has markings C F stamped in the metal base and A103 value code (10k audio taper).

author: andy3055
author_rank: Super Contributor
timestamp: December 09, 2019, 05:19:45 pm
content: Nothing is trivial in my opinion. You had a problem and took time to look for parts that are hard to find, found it and fixed it. Your experience can always help another person. There are many people who don't even bother to do a simple Google search before asking for help from others here. Good job!

author: fzabkar
author_rank: Super Contributor
timestamp: December 10, 2019, 03:12:53 am
content: AFAICT, the manufacturer is Cherkfan. Google images turns up two different logos, one of which matches yours.

author: hanakp
author_rank: Regular Contributor
timestamp: December 10, 2019, 10:46:34 am
content: Ah nice, I've been wondering if C F is the producer's logo. They even have these thumb pots on their webpage, but only 1-gang variant is pictured:http://en.cherkfan.com/products_detail/productId=58.htmlWell, that's a moot point anyway, because none of the Cherkfan R1601N series can be bought anywhere. Most likely they custom-produced them for Creative Labs.
Replacement Power Board For Buffalo Terastation 5600D1806 - Page 1
Forum section: electronics / repair

author: IAPJeffrey
author_rank: Newbie
timestamp: June 05, 2023, 11:32:49 am
content: I have a Buffalo Terastation 5600D1806 NAS.The unit no longer turns on.I'm looking to find a replacement power board.Does anyone have suggestions on where I can find such a board?

author: m k
author_rank: Super Contributor
timestamp: June 12, 2023, 02:45:00 pm
content: Have you opened the case?Maybe it's generic, or something like that.Put up a picture of it, maybe somebody has seen it elsewhere.

author: IAPJeffrey
author_rank: Newbie
timestamp: June 12, 2023, 09:11:13 pm
content: I ended buying a used unit being sold for parts. Thanks for checking.
Replacement relays for Keithley 2001-TCSCAN card ... - Page 1
Forum section: electronics / repair

author: mossygreen
author_rank: Contributor
timestamp: May 28, 2021, 09:00:15 pm
content: I have both the Keithley 2000-SCAN and 2001-TCSCAN cards for use with a DMM6500, purchased well used. All the relays on the 2000 and all but two of those on the 2001 are of the same type. Just so that I know I'm starting with a fresh set of relay contacts I have replaced the common ones on the 2000 card and will do the same with the 2001.Unfortunately I don't know how to identify a comparable part to replace the remaining pair of relays on the 2001-TCSCAN. From the standpoint of a newbie, relays are an astonishingly diverse world.The parts themselves are labeled as being Aromat TF2E-5V-H38's and are referred to as "RELAY, ULTRA-SMALL POLARIZED TF2E-5V" in the Keithley manual for the card. They appear to switch in some current limiting resistors for channels 5 & 10 (I don't exactly grok why those are needed).I've attached a thumbnail from the schematic and some potentially relevant info is here:https://datasheetspdf.com/pdf-file/980252/ETC/TF2E-5V/1Additional info on the part label:ATF209 C01LR26550 50124Any direct pointers would be appreciated, or places to go learn enough to figure out what I need to purchase.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 29, 2021, 06:34:47 am
content: Many places i've checked say the TF2 series are discontinued ?? not so sure, and some give the TQ2 series as a substitute ??Like the TQ2-5Vhttps://www.digikey.com/en/products/detail/panasonic-electric-works/TQ2-5V/251773at 3.42 usd a piece
Replacement slide switches at back of Agilent E3615A - Page 1
Forum section: electronics / repair

author: NoisyBoy
author_rank: Frequent Contributor
timestamp: December 23, 2019, 04:47:43 am
content: Hi,The slide switches at the back of my Agilent E3615A (which selects local or remote CV, CC settings) has developed a very high resistance and affecting the operation of the power supply. It is Agilent part number 3101-3237, which is obsolete and no longer available from Keysight.Does anyone know if there's a substitute for this switch? They are labeled S1- S4 in the PCB next to the rear panel.Update:For other E3615A owners, I have had this supply for nearly 7 years since I bought it new. I have always run it in Local mode, and the slide switches have always been in the up position since new. I played with the switches last night, and the output drop to 0V. The service manual troubleshooting workflow never suspected these switches, and I end up ordering a number of spare parts. Tonight, when I put the DMM across these switches, I found out that even with the switch back in the up position, the switch has either go into open circuit, or with nearly 100K of resistance. Clearly, something oxidized within it over time and created the bad connection. The failure existed in three of six contacts.After flipping it up and down a hundred times, two switches fixed themselves, but one maintained 80K Ohm of resistance. These switches are no longer made by Keysight, and I have not been able to find exact replacement. So in desperation, I flooded it with deox through the slider opening. After a couple hundred repeated up and down, the resistance dropped back to less than 0.1 Ohm. Now the power supply is back in perfect working condition.So, if your supply works fine, done touch those switches. Otherwise, you may have to do hundreds of finger exercise to get it back up and running.Now, I have a bunch of spare parts on the way. I have plenty of extra parts to repair it in the future :-)I hope this post can help others with similar problems in the future.

author: JeLo
author_rank: Contributor
timestamp: December 26, 2019, 03:26:42 pm
content: Thanks for posting.
Replacement switches for Musicalfidelity B1 - Page 1
Forum section: electronics / repair

author: wurzel42
author_rank: Contributor
timestamp: May 15, 2020, 12:25:58 pm
content: I have a Musical Fidelity Amp B1, which works but it's rotary switches (and the MM/MC switch) are pretty noisy and don't make good contact. I already tried to clean them with t6 spray, but I still get crackling. How do I go about finding replacements? Mouser has millions of switches, and I don't know how to filter for this specific switch. The rotary switches have 6 positions but they translate the rotation into a sliding motion. It would make sense to try and get the exact same switches. Else I could mount a standard 6 position stereo rotary switch to the case and run wires to the place where the current switch is. Probably terrible for hifi enthusiasts...
Replacement thermal fuse Microtemp E5A00167 for Nespresso Krups coffee machine - Page 1
Forum section: electronics / repair

author: jimmyc_
author_rank: Contributor
timestamp: August 09, 2021, 12:21:47 pm
content: Hello all!I am having trouble finding a Microtemp E5A00167 thermal fuse on the usual suspects websites (Digikey, element14, etc) There's G401 series available but I would want to get the E5A00167 model as a direct replacement.G stands for globalE stands for Environment friendly.Any ideas where I can get the E5A00167?

author: wraper
author_rank: Unknown
timestamp: August 09, 2021, 12:30:40 pm
content: Quote from: jimmyc_ on August 09, 2021, 12:21:47 pmThose letters mean nothing. It's just a regular thermal fuse. Nothing special about it whatsoever.QuoteBuy from Europe if exact part number is so important. Which BTW is E5A00167C

author: jimmyc_
author_rank: Contributor
timestamp: August 09, 2021, 01:41:01 pm
content: Thanks for your reply!

author: perieanuo
author_rank: Frequent Contributor
timestamp: August 10, 2021, 08:29:39 am
content: Quote from: wraper on August 09, 2021, 12:30:40 pmwow, from now on i'll refuse to do my job if the parts aren't"Environment friendly"
replacement transformer  - Page 1
Forum section: electronics / repair

author: CoffsHackerSpace
author_rank: Contributor
timestamp: March 06, 2021, 06:12:32 am
content: need help sourcing a replacement transformerfor a dinosour control box.any advice greatly apprectiated or point in right direction.primary 0v-110v-240vsecondary 24v/5.2A-20v-16v-14v-0v-14v-16v-20v--24v

author: Gyro
author_rank: Super Contributor
timestamp: March 07, 2021, 09:18:47 pm
content: That looks like an awkward one, with so many closely spaced taps.It could well be possible to buy an appropriately rated 24-0-24V transformer, remove the outer tape, and solder wires on at the appropriate points on the secondary winding. The primary winding is safely insulated underneath the secondary, so wouldn't be compromised.You would be need to be careful not to accidentally create any shorted turns or melt through the primary - secondary insulation. Glass fibre tape would help.P.S. You didn't say, but presumably the primary winding has failed on the existing one. That would be a much harder repair.

author: Ian.M
author_rank: Super Contributor
timestamp: March 07, 2021, 09:32:47 pm
content: Or start with a 9A 14V-0-14V one (9A to get a high enough VA rating) then put on two 10V overwinds to connect in series with the existing secondary tapped every 2V. Don't connect the extra taps that would give 22V, but its easier to put them in while you are winding than to find you've actually missed the 2V tap on one of the overwinds because you got the phasing wrong!

author: CoffsHackerSpace
author_rank: Contributor
timestamp: March 13, 2021, 10:35:55 pm
content: Thankx for the advice Ian and Gyro. outside of my knowledge though.managed to touch base with a company that seem to know what there talking about and are going to build a new one.
Replacement transistor for old PSU - Page 1
Forum section: electronics / repair

author: Sodius
author_rank: Newbie
timestamp: March 30, 2020, 01:11:21 am
content: Hi.I have a faulty PSU from a very old computer with a blown up transistor, but I am having a hard time finding a suitable replacement one.The power source inputs 100volts (Japan) and outputs 12, -12, and 5 and -5 volts, and the computer amperage is less than 1 Amp.The faulty transistor is a 2SA1061 (datasheethere).Hanging around home I found a few TIP147T (datasheethere).Are these TIP147 a good replacement for that PSU? If not, what transistor would be a good (modern) replacement?Thanks beforehand.

author: Whales
author_rank: Super Contributor
timestamp: March 30, 2020, 01:51:29 am
content: The TIP has dramatically more gain (mainly due to being a darlington). This could be anywhere from harmless to problematic, depending on how the transistor is used.Do you have any info about how the transistor is used in the power supply? If you don't have a schematic then some clear photos of the top and bottom of the circuit board would help us with making suggestions.EDIT: As a side note: I've read that many of the big metal TO-3 package style parts on eBay don't meet specs. Greymarket sourcing a part is fine if you have the ability to test it (full load) outside of your circuit first, but if you are not up to that then I would suggest using more official suppliers and pay the extra few $.

author: JFJ
author_rank: Regular Contributor
timestamp: March 30, 2020, 03:05:37 am
content: If you search Newark for a 2SA1061, then the NTE391 is put forward as an alternative:https://www.newark.com/nte-electronics/nte391/bipolar-transistor-pnp-100v-to/dp/31C3990?ost=2SA1061&iscrfnonsku=true&ddkey=https%3Aen-US%2FElement14_US%2FsearchIs the 2SA1061 transistor part of a complimentary pair in your power supply? If so, then it may be advisable to also replace its NPN counterpart with a NTE390, at the same time.
Replacement VFD Display for Keithley 2602A - Where to get? - Page 1
Forum section: electronics / repair

author: Bitflops
author_rank: Newbie
timestamp: August 09, 2019, 09:58:57 am
content: Where is the place to look to find a replacement VFD display for a Keithley Sourcemeter?I've not been successful with my search on the big online marketplaces, looking for a hint maybe..Thx!

author: coromonadalix
author_rank: Super Contributor
timestamp: August 09, 2019, 11:45:18 am
content: Unless you salvage one from a defective unit, i dont think you'll find one outside Keithley ?? must be expensive ? have you asked them ?

author: Kinkless Tetrode
author_rank: Regular Contributor
timestamp: August 09, 2019, 07:59:13 pm
content: Quote from: Bitflops on August 09, 2019, 09:58:57 amYou can get a price quote for Keithley parts here:https://info.tek.com/www-request-parts-information.htmlGood luck with your search.

author: TheSteve
author_rank: Unknown
timestamp: August 09, 2019, 08:17:34 pm
content: I don't believe Keithley sells the VFD by itself. You'd need to buy the PCB with the VFD on it, if they are willing to sell it.

author: TiN
author_rank: Super Contributor
timestamp: August 11, 2019, 01:12:35 am
content: Buy K7001 and steal display from it. It's same glass.
replacement/repair of Digital LCR Multimeter LCD - Page 1
Forum section: electronics / repair

author: VU2CMV
author_rank: Contributor
timestamp: April 12, 2023, 07:14:08 am
content: Hello Friends,My Metravi 451 Digital LCR Multimeter's display has suddenly developed a oval spot where the digits displayed are showing lighter. I have attached a photograph. Please suggest possible remedies ( including sources of replacement LCD in worst case ).Thanks and Regards ,VU2CMV

author: Haenk
author_rank: Super Contributor
timestamp: April 12, 2023, 12:05:29 pm
content: Did you contact the manufacturer?Did you check with a polarizer (sheet or even polarized sunglasses should do the job) if it's the polarizer or LCD itself?

author: VU2CMV
author_rank: Contributor
timestamp: April 12, 2023, 12:09:08 pm
content: Thanks Haenk for your reply. I haven't contact the manufacturer or tried anything . I wanted to consult people with experience in reapiring. If the LCD replacemnt works , I want to try that. But don't know where to get one or the soecification of the LCD

author: Haenk
author_rank: Super Contributor
timestamp: April 12, 2023, 12:37:46 pm
content: That's why you should contact the manufacturer first.Because it's very likely a custom-made display and not freely available.But: I guess this is just another chinese OEM device and Metravi has no spare parts at all.That's when checking the polarizer comes into place - if it's only the polarizer foil, that one could be replaced and is cheaper than a new multimeter.
Replacements for Panasonic FC SMD Caps for Audio electronics - Page 1
Forum section: electronics / repair

author: blatboy
author_rank: Unknown
timestamp: May 07, 2022, 06:48:32 pm
content: Hi! I'm repairing a circa 1995 rack mount audio effects unit. After much research and observation, I'm 99.99% sure the SMD electrolytic caps need to be replaced. These caps have a history of leaking (which I can see on my board) and failing.Most of the caps are for the audio inputs and outputs on the analog board.I'd read that Panasonic FC (low ESR) caps were best for this job. Seems those are hard to come by these days. Is this recommendation of the FC caps just audio-foolery? If "general purpose" caps will do the business, then I'm ready to pull the trigger and just get the damn caps and repair this thing.Also, one of the caps is on the PSU board right by some serious heat emitting regulators (not great design) Should I put a "high-temp" cap there, or is this lily gilding?Hereis the thread about the specific piece of gear. I'm just making a new thread I feel this is a general enough question to get a quick answer from those more experienced than me (which is most of you haha)Once I get my caps, I'll attempt to use my 858D+ for the first time for something other than heatshrink hahah.Thanks so much

author: TimFox
author_rank: Super Contributor
timestamp: May 07, 2022, 06:59:39 pm
content: A quick googling did not yield any data on "LC" Panasonic capacitors: do you have a link?I assume you mean "low ESR", not "ESD".In general, low ESR is a good thing.

author: blatboy
author_rank: Unknown
timestamp: May 07, 2022, 07:09:03 pm
content: yes yes yes you are right on all fronts. please forgive my inability to retain acronyms and other multi-letter non pronunciables <-- I made that word up.FC series not LCESR not ESD ugh.sorry. modified and corrected

author: blatboy
author_rank: Unknown
timestamp: May 07, 2022, 07:12:10 pm
content: I'll see if I can find some other brand low ESR caps that fit the bill. Thanks

author: TimFox
author_rank: Super Contributor
timestamp: May 07, 2022, 07:20:05 pm
content: Just look for "low ESR", "105oC", same or higher DC voltage spec, and compatible mechanical dimensions.Lots of Al electrolytic models out there from reputable manufacturers.

author: blatboy
author_rank: Unknown
timestamp: May 07, 2022, 07:31:35 pm
content: Thanks so much. I really appreciate it.

author: bdunham7
author_rank: Super Contributor
timestamp: May 07, 2022, 07:32:50 pm
content: Panasonic FC isn't the only good capacitor, but Mouser has boatloads in stock so I don't think they are hard to come by. If they don't have a specific one you need, any other brand that they carry in a Low-ESR 105C flavor should be OK.https://www.mouser.com/c/passive-components/capacitors/aluminum-electrolytic-capacitors/aluminum-electrolytic-capacitors-radial-leaded/?series=FC&instock=y&sort=pricing
Replacement/update parts for Hitachi/Resenas 2SK1170 in Chroma AC source 6530 - Page 1
Forum section: electronics / repair

author: f14
author_rank: Regular Contributor
timestamp: July 30, 2025, 01:15:43 pm
content: Hi. I am looking for a replacement for the discontinued 2SK1170 mosfet. I am not sure if it is the SiHG20N50C as the specs are almost the same. Chroma change in very new batch of Chroma 6500s AC source. the old batch before 2015(I guess) still use 2SK1170 .I found pictures but can't see the Mosfet names clearly.

author: coromonadalix
author_rank: Super Contributor
timestamp: July 30, 2025, 02:16:30 pm
content: try to search all related mosfets who have similar specsNch Single Power Mosfet 500V 20A 270Mohm To-3Pand yes the SiHG20N50C seems identical and pinout too, hoping the legs have the same lengthBUT the 1170 has an added part on the gatepdf's attached

author: Kleinstein
author_rank: Super Contributor
timestamp: July 30, 2025, 05:03:38 pm
content: If the FETs are used in parallel, one may have to use parts from the same batch or matched parts. Parts from different batches can be too different to use in parallel, even with some source resistance.

author: wraper
author_rank: Unknown
timestamp: July 30, 2025, 05:12:56 pm
content: Quote from: Kleinstein on July 30, 2025, 05:03:38 pmIf they are used like that with no individual current feedback: 1) in switching circuit, it usually does not matter; 2) if in linear mode, it's broken by design and no sensible matching (not finding quantum entangled parts) and more so just using parts from the same batch with no matching will fix it.

author: f14
author_rank: Regular Contributor
timestamp: July 31, 2025, 03:50:22 am
content: Thanks AllThis Fet use in all of stage in Chroma AC source (PFC, DC-DC, and inverter) . My problems is have few Fet failure in inverter stage ( that very "normal" in chroma ac souce) they have 3 fet paraller in two H bridge ( total 24 fet). I will replace all to the best .
Replacing a decoupling capacitor which has shorted out - Page 1
Forum section: electronics / repair

author: Yamin
author_rank: Frequent Contributor
timestamp: July 21, 2020, 09:00:35 pm
content: I have got a faulty Dyson bladeless fan control board with a shorted out decoupling capacitor. I have removed the capacitor which have cleared out the short. I don't know which value of capacitor to use as there are no schematic available and its a 0603 package capacitor.The capacitor is placed on the main board on the trace which goes to the small board which has got the IR sensor, buttons etc.Thanks in advance for the help.

author: TheMG
author_rank: Frequent Contributor
timestamp: July 22, 2020, 01:10:23 am
content: The exact value is probably not critical. I'd just throw a 0.1uF cap in there and be done with it.
Replacing a FT-2400 Power Amplifier  - Page 1
Forum section: electronics / repair

author: kml183
author_rank: Contributor
timestamp: December 18, 2022, 04:41:39 am
content: Hi there,I am looking for a replacement amp for a broken ft-2400 2m radio that won't transmit. It looks like the RF in to the amp is good. Would the SC1091 be a suitable substitute for the S-AV24 that is in the ft-2400? They look pin compatible and the SC1091 seems to perform well in the 2M Band as well.

author: TheMG
author_rank: Frequent Contributor
timestamp: December 18, 2022, 04:43:31 pm
content: According tohttps://www.rfparts.com/sc1091.htmlthe SC1091 can be a direct replacement for SAV24 if used in the 2m band only, so it looks like it should be just fine for that radio.
Replacing a Rifa capacitor on a Tektronix 2230, equivalent? - Page 1
Forum section: electronics / repair

author: gtr
author_rank: Contributor
timestamp: July 26, 2025, 02:23:57 pm
content: Hello everyone.I need to replace the three Rifa capacitors (2200pF and 0.068pF) on my Tektronix 2230 oscilloscope. On YouTube, a guy provided this link:https://www.digikey.ca/fr/mylists/list/369WQGRVXLThe capacitors he purchased to replace them. However, the 2200pF capacitor is no longer in stock.What other capacitors could I replace them with? I don't want to pay $20 shipping for only three capacitors. What are the equivalents on AliExpress or Amazon, for example, for these three capacitors?Have any members here already replaced these capacitors on this oscilloscope? What values and voltages did you use?Thanks!

author: benj38
author_rank: Frequent Contributor
timestamp: July 27, 2025, 08:26:52 am
content: First, it would help if you provide an image of the original Rifa capacitor.Second, while you can go the AliExpress or Amazon route, both are sources of mostly inferior parts, and are not usually recommended.If you tell us where you are trying to have the parts shipped to, and what you would consider to be acceptable shipping costs, maybe members that are in that country can provide you with advice on relevant parts sources that you may not be aware of.

author: Haenk
author_rank: Super Contributor
timestamp: July 27, 2025, 08:44:53 am
content: There are other professional sellers than Digikey.Since these are safety devices, do not trust any random Aliexpress, Amazon or ebay offer. Even if they are picturing the right part, you often get delivered something else, lacking safety markings (for a reason...).However, there *are* some ebay sellers that represent large companies (using ebay as just another sales channel).

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 27, 2025, 08:51:05 am
content: Any mkp X2 capacitor should do the job.If it's connected to earth, use Y2.

author: gtr
author_rank: Contributor
timestamp: July 28, 2025, 04:41:15 am
content: Thank you all for your replies. I ordered from aliexpress, I ordered several capacitors and other components from this site and I never had any problems with the devices so I replaced the capacitors. Even if for the moment our oscilloscope works well and the capacitors are not bulging, I will still replace them.

author: gtr
author_rank: Contributor
timestamp: July 28, 2025, 12:59:36 pm
content: Here's what I ordered:https://www.digikey.ca/fr/products/detail/kemet/R413F12204000M/5731156https://www.digikey.ca/fr/products/detail/kemet/R463I2680JHH1M/13283062