hybridfree/eevblog-posts huggingface dataset:
Hameg HMS3010 internal connectors - Page 1
Forum section: electronics / repair

author: wcyb
author_rank: Newbie
timestamp: November 19, 2022, 02:46:53 am
content: Hi,I am having trouble identifying the connectors used inside the Hameg HMS3010 spectrum analyzer.Maybe someone here will be able to identify them.They both have 50 pins each, the ones labeled "1" are the same type, just a male and female version. The pin spacing for "2" is 0.5mm, and for "1" is 1.27mm.

author: jpep
author_rank: Contributor
timestamp: November 19, 2022, 12:33:06 pm
content: Not sure if you are looking for the exact part number. Anyway in case you cannot find the exact part number I would try with this to fix it:1. Use generic 1.27 pin pitch double row headershttps://www.mouser.es/c/connectors/headers-wire-housings/?mounting%20style=SMD%2FSMT&number%20of%20positions=50%20Position&number%20of%20rows=2%20Row&pitch=1.27%20mm2. Looks like a standard FPC connector to me, but the closing tab has been ripped away:https://www.mouser.es/c/connectors/ffc-fpc/ffc-fpc-connectors/?pitch=0.5mm

author: coromonadalix
author_rank: Super Contributor
timestamp: November 19, 2022, 01:35:57 pm
content: for the #2 connector, its been bent pretty hard, use hot air and flux paste, or liquid flux to remove it, not sure if the pcb pads received an damage

author: wcyb
author_rank: Newbie
timestamp: November 19, 2022, 02:40:53 pm
content: It seems that none of the pads at connector #2 was completely torn from the PCB, some slightly started to lift, but I think it can be fixed.As for connector #2, in the photo below you can see the part that goes into it.There is also underlined text "ERNI" on connector #1, maybe this will help in identification.Thank you for your suggestions so far.

author: jpep
author_rank: Contributor
timestamp: November 19, 2022, 04:13:57 pm
content: So for #2 you are supposed to slide into it a full height PCB? If so, I have no idea what type of connector it is....

author: wcyb
author_rank: Newbie
timestamp: November 19, 2022, 07:14:57 pm
content: It looks like I was able to find the model of connector #2 used. It is Molex 0512965094, Easy-On 51296 series.Quite expensive for what it is.Now all that's left is to find the model of the other connector.

author: jpep
author_rank: Contributor
timestamp: November 19, 2022, 08:38:23 pm
content: Quote from: wcyb on November 19, 2022, 07:14:57 pmNice catch, I had never seen an FPC style with 1.30mm height insert...For #1 These two look similar to yours:https://www.mouser.es/ProductDetail/ERNI/154807?qs=DK05bRAVOD79%2FVlbflc2AA%3D%3Dhttps://www.mouser.es/ProductDetail/HARTING/15210502601000?qs=j6WHE8AsyXU6YbAIkC7Lbw%3D%3DAlso quite expensive

author: wcyb
author_rank: Newbie
timestamp: November 21, 2022, 11:12:49 pm
content: Yes, it looks like the exact match will be ERNI 154807 (female) and ERNI 244838 (male).So the problem has been solved.Thank you for your help.
Handheld devices and battery charge - Page 1
Forum section: electronics / repair

author: Solipse
author_rank: Newbie
timestamp: November 02, 2019, 10:58:09 pm
content: Hello,It's my first time on this forum, I'm an hobbyist repair guy and I'm mostly dealing with common household devices people are bringing me (and mines too when I've free time).One thing that I encounter quite often is that common battery powered stuff like cameras, cordless phones, and so on (and more specifically those on AA or AAA batteries) stop to work with their normal operating voltage. They would do well when siting on their charge base, being powered through a converter attached to the battery terminals for instance, but don't light up or die very fast when using even brand new fully charged batteries.I was wondering, as it is so common with very similar behaviour, if a specific component is mostly always responsible for this (like a voltage regulator maybe)?But I'm still pretty bad at reading circuits, even more when it's cms. And lacking time to spend on these devices that are fairly low value, but apart from that still working and useful !I'm sure I can't be the only one wondering about this issue, but still I can't find much on the subject so far...
Hanimex 2500RF Projector  - Page 1
Forum section: electronics / repair

author: harveyradar
author_rank: Contributor
timestamp: August 27, 2021, 08:41:33 am
content: I am trying to repair a Hanimex 2500RF Projector that has had a burn up of components on the PCB - largely fixable BUT someone has been there before me and the connections to the PCB are wrong. E.g. one of the motors has a connector plugged to an isolated section of the PCB - so it will never work!Does anyone have any technical details on these Rondette style of Hanimex projectors?ThanksHarvey
Hanmatek dos1104 - Page 1
Forum section: electronics / repair

author: Gadd
author_rank: Newbie
timestamp: December 10, 2024, 09:25:41 pm
content: I picked up a dead no power hanmatek dos1104 from evilbay, it appears brand new in original box with the screen protector still on it.Ends up with two shorted buck converters and shorted MCU F1C200s. After replacement the unit now boots to a splash screen then boot loops.I'm hoping to find the software for the MCU. The manufacturer does not respond to emails, or have any type of support that can be contacted.Paul

author: coromonadalix
author_rank: Super Contributor
timestamp: December 11, 2024, 11:00:44 am
content: PLS dont double thread
hannstar K MV-6 e89382 - Page 1
Forum section: electronics / repair

author: david69
author_rank: Regular Contributor
timestamp: October 09, 2025, 04:05:00 pm
content: Hello,can you advise where to look for hannstar K MV-6 e89382 power supply 1.5 or 1.8V LED 1,2,3 where the voltage is 80mV, voltage 5V,3.3V is presentthanks for any idea

author: david69
author_rank: Regular Contributor
timestamp: October 10, 2025, 08:33:38 am
content: The 1.8V power supply is under the shield plate, and it works.The non-functioning power supply is marked red on the white connectorl and choke,is there a power supply for the board connected by a PD533BA transistor from the bottom of the board,can I find out what the power supply connector should be?
Hantek IDSO1070A li-ion charging circuit - Page 1
Forum section: electronics / repair

author: Southpole560
author_rank: Newbie
timestamp: May 09, 2021, 03:47:20 pm
content: Hey everybody, I'm new here and I'm not sure if this is the right place to post this but would anyone happen to know what type of MSOP-10 chip is used on the Hantek IDSO1070A ? It looks to be the charge controller for the li-ion battery but I cannot read the markings on it because it was fried somehow. I think I accidentally made a ground loop and took that chip out. The rest of the scope looks fine it's just that chip I need to replace. I looked at a MCP73833 and a LTC1733 datasheet but I'm not sure if either are those would be the right choice. Thank you for your help!

author: Southpole560
author_rank: Newbie
timestamp: June 22, 2021, 09:54:17 am
content: Bump. Anyone?

author: Southpole560
author_rank: Newbie
timestamp: July 03, 2021, 09:54:24 pm
content: I finally figured out which charging circuit would work. It is a Texas Instruments BQ24090DGQT. So if anyone has the same issue, this fixed it.
Hantek 5102P Manual de Usuario - Page 1
Forum section: electronics / repair

author: hantek2024
author_rank: Newbie
timestamp: June 15, 2024, 08:48:32 am
content: Ok, gracias ya lo conseguí.

author: squadchannel
author_rank: Frequent Contributor
timestamp: June 16, 2024, 09:10:32 am
content: Try again with the input coupling mode in GND mode, not AC or DC.I think it is simply picking up 60/50 Hz because the input is floated.The link to the pasted video does not seem to be available. youtube is recommended.
Hantek 6022BE not working - Page 1
Forum section: electronics / repair

author: status1
author_rank: Contributor
timestamp: April 03, 2021, 03:48:35 pm
content: I was trying to use my Hantek scope to see the pwm waveform on a power supply and when I opened the software it went into demo modeAt first I thought maybe I deleted the driver by mistake because I was cleaning out some of the unused files and I did not see any drivers in the device manager or at least not with the Hantek name attached to itI reinstalled the software and driver but it was still not doing anything when I plug in the usbI plugged in my camera in the usb port and that is working so I know the usb port is goodAfter some research I heard about someone who suggested to remove diode D2 but I think that was on a different model but I did open up the scope and I measured D1 which is near the USB B port and it was measuring shortSo I removed that diode and the short went awayI ordered a replacement but I was wondering if anything else could be wrongWhen I plug in the USB I am getting about 3.8V from the cathode tab of the diode to gnd with the shorted diode removedWould that be normal without the diode in place ?Isn't the usb supposed to provide 5V ?Would the computer be able to detect the scope without that diode ? I am guessing probably not

author: status1
author_rank: Contributor
timestamp: April 16, 2021, 08:16:27 pm
content: I made a little progress but it's still not workingI installed the diode but now the software doesn't seem to do anythingAfter that I took it apart and felt the bottom of the pcb a little warm so I thought maybe there was a short on the bdI measured the regulator U5 that was in the area on top and I found the output shorted to gnd so I removed the regulator and nearby cap C12 but the short is still on the bdAt least now I am getting 5V up to the regulator input from the USBSo I think this may be a BER unfortunately because there are a lot of parts across the output and ground and and I would have to remove all the parts just to find a shortWorst case it could also be a short in the pcb layers but I am just not sure what could have caused this kind of damageI also removed L9 which is inline with the output so now the pins of the regulator are no longer shorted so the short is further away from the area where I felt the bottom of the pcb being warmI may mess around with it by connecting it to a 5v dc source and see if something else is getting warm further down the line but that is a long shot and I could also damage it even more
Hantek 6022BE service / testing? - Page 1
Forum section: electronics / repair

author: scooper
author_rank: Newbie
timestamp: January 31, 2017, 05:31:00 pm
content: Hi,I just bought a Hantek 6022BE oscilloscope.After pluggin the Hantek in, Windows 10 doesn't start the driver installation as it should when a new device is detected.Linux 16.06 doesn't change the usb device list when compared with lsusb.Win 7 detects that something is plugged in but if you install the driver, it ends to not detected unknown device.All ports and cables are fully functional and tested.I opened the oscilloscope and detected soldering of the ADC-chip under the sink has the following:counting from the dot near label U8, some pins are soldered together, I can't say if that's a mistake or not (not too professional looking...):- 3+ 4- 5+6+7- 9+10Please see the attached pictures. (The black fabric tape on top of the sink is put to control the light reflections )My board version is 1.00.2 , board says 012-05573BH (a lot number ? ), serial 61040771.The drivers are the newest downloaded on 01/20/2017, I also tried the driver included in the package.Sending this back to celebrating China costs 46 € (!!!) from Finland (and takes some time...), so I'd prefer to report well enough to avoid the shipping and waiting.Can anyone help with :-the pins- tell some electrical test routines originated from the manufacturer- how to dump something out of the equipmenthttps://www.eevblog.com/forum/testgear/hantek-6022be-20mhz-usb-dso/The power consumption is measured 350 mA from USB, Cypress in Hantek is programmed to say 100 mA ...

author: sjuliancarrizo
author_rank: Newbie
timestamp: September 10, 2019, 10:00:02 pm
content: Hi Scooper!I belive you already solve the issue but, in case that someone is reading this post, I just want to add that those soldered pins at the ADC chip are normal. I have the same DSO working, and I can see the same on that chip.Regards.

author: PKTKS
author_rank: Super Contributor
timestamp: September 11, 2019, 01:17:22 pm
content: Whatever the thing you plug in linux it *should* at leastput some event notification (use dmesg or else)device is recognized ONLY USING USB ID 04b5.6022the 04b4.6022 Cypress CPU is recognized as device but WILL NOT WORKit looks like no firmware...So you should UPLOAD SIGROK new firmware ...BEFORE firmware upload the device is the Cypress CPU as 04b4.6022AFTER firmware upload the device is correctly identified as 04b5.6022 HantekDSO6022BEand it also works even better than original firmware...In case you have no event notification your problem may lie on the USBPaul
Hantek 6022BL repair - Page 1
Forum section: electronics / repair

author: Ario
author_rank: Regular Contributor
timestamp: September 08, 2020, 10:58:07 pm
content: Hi all,I have a hantek6022bl scope to fix. I am pretty sure that I need to replace a zener diode. The zener runs hot, and shorts out the usb power supply. My question is simple, I am I correct when I say that the zener in question is a 5.1V zener diode?It is connected to a usb port.(please see my attached picture)I am not 100% sure, and would like to hear someone's opinion. By the way would be the best way to identify it? It seems that there are no color code, or any other markings on the diode. I have ordered a bunch of zeners. they all look almost exactly the same, yet they are rated at different voltage values!Any help would be appreciated!!

author: Doctorandus_P
author_rank: Super Contributor
timestamp: September 09, 2020, 09:19:42 am
content: It looks like it's relatively save to just remove the diode.It seems to be connected to GND and the 5V input from USB, and it does indeed looks likely it's a 5V overvoltage protection device, but you should make sure before doing so. First draw a partial circuit of the components around it, and deduce it's real function from that.It also looks like a design error. If it's a over voltage protection, I would put it behind the Polyfuse.Does the diode measure as a regular diode in forward direction?If it does not, it's likely kaput, but it could also be a bidirectional TVS.

author: Ario
author_rank: Regular Contributor
timestamp: September 09, 2020, 12:47:39 pm
content: @Doctorandus_PThanks for the reply. The zener is a dead short from either direction. It also gets super hot. So think I will replace it. I will update when done. The scope worked before, could it really be a design error after all this time?regards

author: Ario
author_rank: Regular Contributor
timestamp: September 09, 2020, 01:32:31 pm
content: It worksThanks for the input!!!Doctorandus_P
Hantek DS0 5072P Boot up issues - Page 1
Forum section: electronics / repair

author: Orion63
author_rank: Contributor
timestamp: February 09, 2021, 04:38:43 am
content: Hi, Recently picked up this Hantek DS0 5072P scope. It was advertised as a brand new out of the box working unit by the seller but when I received it, although I can see the lights ON, there is nothing on the display. Just a black screen. See picture. The CH1, CH2, MATH, AUTOSET, SINGLE SEQ AND RUN/STOP button lights always stay ON and I cannot get them OFF by pressing them. Similarly the VO indicator also stays ON. As I understand, perhaps I am wrong, that this is the Boot mode. So my DSO5072P does not come out of the boot mode. I measured the +5V, 3.3V, -8V are spot-on, while the +14V measures +12.4V. Can anyone from the Forum help on this issue ?Secondly, I did not receive any CD in the box. Regards.
Hantek dso 5102p LCD adapter  - Page 1
Forum section: electronics / repair

author: jasonmrc
author_rank: Newbie
timestamp: August 22, 2021, 05:14:51 pm
content: HiLooking to repair the fault in my hantek dso 5102p the display is not right - I contacted hantek and suggested to change the display panel to at070tn92 but i am suspecting the LCD adapter that sits behind the LCD glued with silicone is at fault as it supplies voltages to the LCD.Has anyone tried to reverse engineer this board and have a schematic seems it uses a tps65150 chip. I am might be tempted to change the chip ! but first i want to confirm the schematic. the datasheet has various schematics .Any help is greatly appreciated
Hantek DSO 8060 issue - Page 1
Forum section: electronics / repair

author: Gae
author_rank: Contributor
timestamp: December 08, 2020, 10:29:08 pm
content: Hello,I am new here, I use to repair some audio stuff.Many thanks to the creator of this forum, it's very helpful !And I have a problem with my scope i bout in February, a Hantek DSO8060I got it in Banggood quite cheap but I don't recommend this site for buying: it took about 2 month to arrive and i have a problem with it.Suddenly Cannel 2 stop working. Not even the line was appearing on the screen. So, I changed one of the IC in the input and the green line appears but CH2 still does not work.After measuring Ω and volts I suppose it's one of the relay (I suppose it's a relay) in the CH2 input. But no way to find the data sheet of it. It's written: PL-4.5nd I think it's a relay but it has 10 pins ... I'll try to upload a picture. No way to find any spare part for it.Any help would be welcome. I am used to repair vacuum stuff, much bigger then the SMD components ...

author: Digorion
author_rank: Contributor
timestamp: December 09, 2020, 04:25:56 pm
content: Hello!Its looks like a polarized relay, like this (link just for example, not the direct replacement, see table):https://www.novoelectronica.ru/catalog/20649/rele-40-p-l-24-9479

author: Gae
author_rank: Contributor
timestamp: December 10, 2020, 01:05:53 pm
content: Exact ! Many thanks.They are the same, Just that the ones I need are PL-4.5Do you know what trade is the symbol on the relay ?I would go on it's web site.Or any other idea of where I could find it ?

author: Digorion
author_rank: Contributor
timestamp: December 10, 2020, 01:26:17 pm
content: I have seen this trademark before, but I do not know who the manufacturer is. Try searching on mouser or aliexpress. Something like "polarized latching 4.5v relay through hole mounting" etc.Also:http://www.huaguan-relays.com/products/latching-relays/?lang=enActually, did you check this relay already? May be it still intact?

author: Gae
author_rank: Contributor
timestamp: December 13, 2020, 09:43:20 pm
content: Thanks,I am trying with mouser to get the correct relay.How can I check the relay ? A new one cost about 4€, I just change it: I have signal at the imput, no signal at the output ...Thanks for your help !
Hantek DSO 8060 strange problem - Page 1
Forum section: electronics / repair

author: irgen369
author_rank: Newbie
timestamp: June 05, 2021, 11:53:09 am
content: So i decided to change the battery on my oscilloscope, but since it is difficult to find the original one, I made my own similar one (2 batteries in series + a stabilization board, the wire from the temperature sensor of oscilloscope was soldered to minus). After connecting the battery, the oscilloscope started working, but after connecting to the power supply to charge the battery, the battery indicator on the oscilloscope started blinking red and the battery was not charging. I disassembled the oscilloscope and found out that a voltage appeared on the contact of the temperature sensor (about 4 volts), despite the fact that the temperature sensor is soldered to the minus power supply. I tried to apply the supply voltage from another battery with a temperature sensor, but the situation has not changed. Does anyone know the cause of this problem? Or maybe there is a scheme of this oscilloscope? Thank you in advance.

author: Smauel
author_rank: Contributor
timestamp: June 05, 2021, 10:10:16 pm
content: Unfortunately I'm not familiar with the device, but here are a few questions for which the answers may help4 volts with reference to what? Is the oscilloscope ground referenced when you are making that measurement?Does the original battery have the same problem?What is the voltage of the positive power supply?Good luck !

author: irgen369
author_rank: Newbie
timestamp: August 10, 2021, 03:37:24 pm
content: Sorry for not answering. 1. 4 volts reference to battery negative contact. 2. No 3. After i removed it - yes 4. 12 volts, as it should be. Thanks in advance!
Hantek DSO2000 freezes the display after start up - Page 1
Forum section: electronics / repair

author: ereides
author_rank: Newbie
timestamp: August 07, 2024, 11:18:27 am
content: Hello all!A few months ago I purchased an oscilloscope Hantek DSO series 2000 and now I have a problem with it.. The instrument freeze the display after start up, all the LED's of the front panel are on and nothing is possible to do with the instrument.I wander if someone of you have experienced this problem and what can be the cause of the problem.Please see the pictures.thank you all in advance and best regards.

author: Aldo22
author_rank: Super Contributor
timestamp: August 07, 2024, 12:00:49 pm
content: Have you read the FAQ (Recovering)?https://www.eevblog.com/forum/testgear/hantek-dso2x1x-models-master-thread/It's better to ask in that thread (more audience).
Hantek DSO2C10  TRIGGER - Page 1
Forum section: electronics / repair

author: hantek2024
author_rank: Newbie
timestamp: July 22, 2024, 02:45:39 pm
content: Hello, greetings, I would like to know if the Hantek DSO2C10 Digital Oscilloscope or any of the models in the same series, solved the problem they had with the trigger, which apparently was very unstable.Has the problem been solved with a firmware update?

author: Aldo22
author_rank: Super Contributor
timestamp: August 03, 2024, 10:55:05 am
content: What problem are you referring to exactly?It might be better to use the main threads of this model for questions:https://www.eevblog.com/forum/testgear/hantek-dso2x1x-models-master-thread/https://www.eevblog.com/forum/testgear/new-hantek-dso2x1x-models/
Hantek DSo2D15 Woes. Odd wave at low frequencies - Page 1
Forum section: electronics / repair

author: Jwillis
author_rank: Super Contributor
timestamp: November 15, 2023, 11:25:57 pm
content: First off i would like to say that my expectations were really low at the time of purchase. but it was the only thing i could afford.There are a few problems I've been having like USB not functional and intermediate noise and coupling issues but I will start with the most unusual consistent issue.I was taking reading of the output of a astable multi-vibrator for something to do, and noticed a skewing of the wave that just didn't look right. It should be a square wave. I confirmed it with my analog scope that it was indeed out putting a square wave.I did some experimenting to see what the problem is . A really bad skewing of the trailing edge of a square wave at low frequencies. It's starts to be noticeable at around 150 Hz and worsens the low the frequency gets. This only happens in AC coupling on both channels, 1 and 2 . DC coupling give a square wave without any skewing.I can simulate the same condition on my analog scope by putting a coupling capacitor lower than 0.01uF between probe and DUT. Lower the value of the cap the more pronounced the skewing.This kind of leads me to believe that the AC coupling capacitor inside the Hantek is too low a value. I have not checked the actual value as yet. I believe it to be C109 in the schematic.Anyone have any thoughts or having a similar problem with their Hantek DSO 2000 series scope?I've included the schematic to show possible problem. Sorry about the pics. USB seems to have kicked the bucket so I can't give screen shots.Edited: to low of value to to high of value.Ah geez!I had it right the first time.

author: m k
author_rank: Super Contributor
timestamp: November 18, 2023, 04:39:12 pm
content: Test it.Bypass it like DC would do,put few known values parallel to it.It's a derivator so with known values you can calculate how it should behave.Unknown value will affect but you can also calculate its rationality and then verify if removed.
Hantek DSO4072s's AWG (generator) option not working installed originally - Page 1
Forum section: electronics / repair

author: handsome
author_rank: Newbie
timestamp: June 23, 2022, 08:34:01 pm
content: Hi. I bougth Hantek DSO4072s oscilloscope 4 years before. It has AWG (wave form generator) option installed originally. Recently AWG option was broken. Oscilloscope working normal but Output of generator give only about 8 mV dirty square wave whichever wave form I choose. I changed DAC902E but result is the same. I tried to find problem, finally saw there isn't no clock signal at CLK input pin (28th pin of DAC902E) which coming from FPGA. I think the problem software related. I need your help. Thanks.
Hantek DSO4104B - control knobs not worknig - Page 1
Forum section: electronics / repair

author: MrWifiHifi
author_rank: Regular Contributor
timestamp: August 06, 2025, 06:21:06 pm
content: HiI have Hantek DSO4104B oscilloscope. Control knobs for volts/div and offset for every channel stopped working. Had somebody encountered same problem with this scope?I checked the encoders, no short to ground or between pins. My only suspects are IC responsible for signal multiplexing from knobs.If any one had encountered same problem or have any tips on fixing it, I would be very thankful for any useful comment.
Hantek DSO5072P FPGA error message - Page 1
Forum section: electronics / repair

author: roger_g
author_rank: Newbie
timestamp: May 19, 2020, 09:04:37 am
content: Hello, my first post, hope it is in the right place, and someone can offer any help at all please.I purchased the Hantek DSO 5072 about 18 months ago, worked well and only had about 20 hours use in total.No modifications or upgrades attempted.Every time I switch on now I see an error message "Error: Fpga version does not math with the app!!The screen stays on, all buttons illuminated, but no relay clicks which I normally hear at power up. No controls function, only option is off button.I saw one previous post, but no solution, can anyone give me any clues please?Many thanks,Rog
hantek dso5072p sometimes is ok but sometimes only fan is on - Page 1
Forum section: electronics / repair

author: gromi_72
author_rank: Newbie
timestamp: January 17, 2020, 06:58:14 pm
content: Sometimes (especially after long time without using it) when i try to turn on oscilloscope it try to begin less than 1s and after that only fan is going on (the other things like buttons, leds and display are without reaction).What can be there?What should i try to find at the moment?Maybe "alu" capacitors?How can i try this.Als attachment is a photo inside.

author: gromi_72
author_rank: Newbie
timestamp: January 18, 2020, 12:59:01 am
content: Now is even something special :)fun on, some leds on, display off and everything without reactionedit: about 10 minuts after this everything works good

author: Microcheap
author_rank: Frequent Contributor
timestamp: January 18, 2020, 01:35:18 am
content: Check the output voltages in the power supply to see if it is ok:But according to the symptoms you described, I would suspect of bad electrolytic caps or some cold/cracked solder joint.

author: gromi_72
author_rank: Newbie
timestamp: January 18, 2020, 10:48:09 am
content: in 2 places was a difference:-- pin 2 -- +15.3V instead of +14.5V +/- 0.5V-- pin 6 -- -9.1V -- -9.0V instead of -7.0V +/- 0.5VEvery other voltage was very good.Measurement after normal start of oscilloscope with uni-t UT70A.EDIT:Other (good) pins:-- pin 4 -- +6.5V (+6.5V +/- 0.2V)-- pins 9 and 10 -- +3.28V (+3.3V +/- 0.1V)-- pin 12 -- +4.95V (+5.0V +/- 0.2V)What can be wrong?Thank you for this picture. Where can I find some other helpful data for my oscilloscope?

author: Lew1
author_rank: Newbie
timestamp: May 24, 2020, 02:04:29 am
content: Hello Guys,I have basically the same issue. Only the fans runs. My PS board has on it: DSO5000 Series Power, 2013/05 Ver 1.0. Would anyone possibly have a schematic for this unit? Any help would be greatly appreciated...Thanks,Lew1

author: Syzeryuino
author_rank: Contributor
timestamp: July 24, 2021, 12:00:22 pm
content: have u fixed the issues? or do you just give up? because I have the same issues, same led lighting up and everything
Hantek DSO5072P start up problem  - Page 1
Forum section: electronics / repair

author: qrpoperator
author_rank: Newbie
timestamp: September 06, 2025, 01:09:24 pm
content: Hi i have an Hantek DSO 5072P with this failure.Pressing power button screen show Hantek and the QRcode ,after some seconds i went into black screen.Did anyone have a cure for this problem.power on and off after sec and power on didend work. Pressing math menu under start up same problemHave changed internal 3032 battery. same problem .Led beside VO autoset runstop singleseq ch1menu mathmenu ch2 menu are onAll different voltages from power supply are present .Hope any one have the cure for it .Many Thanks Erik

author: crazybike63
author_rank: Newbie
timestamp: September 10, 2025, 04:22:03 pm
content: hello i have the same problem with a DSO5202P. Probably the flash memory corrupted ...

author: qrpoperator
author_rank: Newbie
timestamp: September 14, 2025, 08:55:02 am
content: Hi crazybike what can be done did you get it to work agn and how ?
HANTEK DSO5102P boot up issue - Page 1
Forum section: electronics / repair

author: Krf1786
author_rank: Newbie
timestamp: February 09, 2024, 03:52:56 am
content: Hello!When I turn it on, the screen stays black and the buttons on the right side start flashing and it makes a ticking sound when doing so. This just continues until I turn it off. It was working fine, sat in the box for a few months, then when I turned it on recently, this happened.I emailed Hantek and they asked me to check the input voltage. The 5v and 3.3v. I got 4.7v and 3.3v. I responded to them and still haven’t heard back in over a week. Hopefully someone might have an idea of what this issue could be! Thank you!

author: BlownUpCapacitor
author_rank: Frequent Contributor
timestamp: February 09, 2024, 05:56:29 am
content: Does the voltage on the PSU stay consistent, or does it hiccup? Hantek's assumption was correct. These symptoms indicate a hiccuping PSU.

author: Krf1786
author_rank: Newbie
timestamp: February 09, 2024, 11:44:35 am
content: I did not see any fluctuation

author: bertcnc
author_rank: Newbie
timestamp: May 18, 2024, 07:02:35 pm
content: Did you get it to boot up? I have the same problem

author: HantekNotech
author_rank: Newbie
timestamp: June 09, 2024, 02:45:32 am
content: Yes, this scope definitely has a boot up issue! So far I've been able to cajole it into booting up by repeatedly pulling the mains plug out and putting it back in, but it's now decided to bless me with the HANTEK logo on the screen forever without choosing to actually act like a scope.There IS a USB input but I don't know if that can be used for anything in the way of boot up. Has this scope been designed with planned obsolescence by the Chinese? I notice a heap of other people hve the sam problem. i don't really want to get into their electronics and redesign them - I'm too busy with other stuff.Any constructive hints would be appreciated. Can't even use it for a boat anchor - it's too ligh :horse:t.

author: imagineinspire
author_rank: Newbie
timestamp: June 11, 2024, 12:15:33 am
content: Hi, I have exactly the same problem,I just received the 5102p today, brand new, when I unboxed it, I found that the knobs are not working, because I'm in a country where I can not do a return,I just replaced the faulty knob and it's was working.The problem I got is I was working with it until it got stuck. and the screen goes black, when I restarted it, I see all the lights turned on but no screen, I suspect the firmware got corrupted, I have no idea how to restaure it or use the reset via USB without the screen.Any advice would me much appreciated, just lost 250$ for a brand new and waited too long to receive it. :'(
Hantek DSO5102P not measuring anything on both channels - Page 1
Forum section: electronics / repair

author: D4no0
author_rank: Contributor
timestamp: March 12, 2020, 04:59:14 pm
content: Hello,I just got an Hantek DSO5102P oscilloscope and out of the box I wanted to calibrate the probes. After I hooked the probe to reference signal it worked for 5 seconds and after that it stopped. The scope is not measuring any voltage at all, connected it to my power supply without any success, on both channels.When I turn the self calibration it gets stuck at 2/38 step with the message: Self calibration failed, error: 0xc00. Any idea why it might happen?

author: D4no0
author_rank: Contributor
timestamp: March 13, 2020, 06:28:58 pm
content: Okay looks like I solved the problem. There was a loose wire from the power supply to the logic board.
Hantek DSO5102P Stuck in booting - Page 1
Forum section: electronics / repair

author: Nir90
author_rank: Newbie
timestamp: February 06, 2025, 09:50:36 am
content: Hi Everyone,I have the Hantek DSP5102P oscilloscope and it is stuck on the booting screen.The battery inside was empty, so I replaced it but still nothing.There is no boot button as illustrated in the forum regarding DSO2000 series, the post was:https://web.archive.org/web/20211203160240/https://www.eevblog.com/forum/testgear/hantek-dso2x1x-firmware-updates-and-best-use-practices/msg3590160/Also, I could not find any firmware that can be installed directly from the PC.Thanks for any advice!

author: m k
author_rank: Super Contributor
timestamp: February 14, 2025, 08:33:51 am
content: Firmware hardly disappears with bad battery.But some vital boot info is a different thing.So maybe all you need is factory default settings.

author: poligrafych
author_rank: Newbie
timestamp: March 13, 2025, 08:21:45 am
content: DSO5102P Please help with the problem, it worked after the update and then turned it on a few days later , but the buttons and encoders do not work , although everything glows and the inscription at the bottom of the screen error fpga version does not mith the app !! Helpplease.
Hantek DSO5202B freezing then restarting repeatedly - Page 1
Forum section: electronics / repair

author: Yansi
author_rank: Super Contributor
timestamp: April 07, 2020, 11:33:37 am
content: Hello,Yan here again. Few days ago, my old Hantek DSO5202B scope decided to quit. After running it a couple minutes, it freezes (either by itself, or by getting scared of a button press or so. After being frozen and unresponsive for a couple of seconds, it restarts itself. And then the whole process repeats. It works for a few minutes, then freezes.The scope is in an original DSO5202B, from 2013, not a hacked unit. Firmware update never done on it.I've poked inside, cleaned the little bot of dust from there and replaced RTC battery (the original one had 0.2V). Anyway, that discharged RTC may not be anyhow related to the problem.But what may be causing it? Anyone encountered this issue? I am not sure if this thing is even worth trying to repair it. As a last resort experiment, I have downloaded a firmware upgrade from the Hantek website and tried updating. Well, it does not even see the file on the USB drive.Any suggestions please what I could try to diagnose the issue? I can only think of measuring the power supply ripple and voltages on all rails.

author: tunk
author_rank: Super Contributor
timestamp: April 07, 2020, 12:11:48 pm
content: Bad solder joint?It could be that it only see FAT partitions (and not FAT32),but if it crashes during update then you may end up with a brick.

author: magic
author_rank: Super Contributor
timestamp: April 07, 2020, 03:46:31 pm
content: IMO the first suspect in all electronics failures are supply capacitors.I would never dare to attempt firmware update on a device that exhibits any kind of random behavior

author: Yansi
author_rank: Super Contributor
timestamp: April 08, 2020, 10:30:12 am
content: It's a useless brick already, what can I loose?(time... likely hours of time...)I have peeked inside (when replacing the RTC battery), the supply looked as a new one, but that look may sure be deceptive.I can measure the voltages and ripples. Will report back, but I don't expect there much to happen.
hantek dso5102p - Page 1
Forum section: electronics / repair

author: poligrafych
author_rank: Newbie
timestamp: June 14, 2025, 04:08:14 pm
content: I ask for your help with the Hantek DSO5102P oscilloscope, when the screensaver is turned on and loaded, an inscription appears at the bottom of the screen: Error: Fpga version does not math with the app!!, the buttons all light up and do not respond to pressing. Logging in to recovery doesn't help because clicking buttons is excluded. Please help me with restoring the oscilloscope. Thank you in advance.
Hantek HDG1022A not working - Page 1
Forum section: electronics / repair

author: Демян
author_rank: Newbie
timestamp: January 28, 2022, 03:54:50 pm
content: Function generator Hantek HDG1022A - its not working.Display is bright after turning it on, but is showing nothing. Voltage regulators are in good condition I don't know what to do maybe something in software is bad?
hantek oscilloscope Dso5102p, does not perform measurements - Page 1
Forum section: electronics / repair

author: RODCYBORGRJ
author_rank: Newbie
timestamp: July 04, 2023, 04:02:51 am
content: Hello friends, I have a hantek 5102P oscilloscope with a few months of use and hours of use where it is not taking measurements. I already updated the software. Turns on normally, accepts all functions, updates without error, performs high calibration and nothing is inoperative. I performed the 5v1khz output test with no signal. I made the following measurements with an oscilloscope and noticed that the test that should have output 5v has less than 1votls. I noticed that the 78r05 board regulator on the board shows 0.95v. So I removed and did the test off the 5v regulation board. Some component on the board is killing it by lowering the regulator voltage. Has anyone had this defect or could help me I have a schematic

author: Greybeard
author_rank: Frequent Contributor
timestamp: July 04, 2023, 07:47:56 am
content: This headline could create more replies:Hantek oscilloscope DSO5102P turns on, but does not take measurements help me[ Google translator frisian (frysk) -> english ]

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 04, 2023, 08:25:24 am
content: When I saw the title I realized that I could read itHowever I don't think it's Frisian but South-African, I'm curious now. Maybe OP can explain?

author: RODCYBORGRJ
author_rank: Newbie
timestamp: July 04, 2023, 08:32:13 am
content: hello friend I did not understand the answer. I use Google translator to communicate, so I don't know how to translate correctly. sorry

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 04, 2023, 09:16:35 am
content: Received a PM from RODCYBORGRJ so I explained what we were discussing. It looks like Google translate made weird mistake.Apart from that I tried to help with the problem:"Unfortunately I have no knowledge of that Hantek scope but it certainly looks like something is shorting the output of the regulator. Did you test the regulator with a load on the output, like a 20 ohm resistor?"
Hantek Oscilloscope PSU board faulty - help understanding the circuit - Page 1
Forum section: electronics / repair

author: punkieys17
author_rank: Newbie
timestamp: December 31, 2022, 08:34:13 pm
content: Hi everyone. My Hantek DSO5102P stated acting up and eventually failed to switch on. The PSU was not putting any power out. Thought it was going to be an easy repair but eventually had to draw out the circuit myself to help. I just cannot understand the circuit. Across teminals 1 to 3 on the transformer I get 15vAC....with the DC lines from the bridge rectifier at 330v (mains is 240AC). I get no voltages on any other of the transformer terminals. Ive replaced all the electrolytic capacitors and measured the SMD decoupling capacitors and none show shorts. There are no voltages at all on any of the outputs. I have replaced all the semis in desperation ....Im confused that on one side terminals 1&3 and 2&4 are connected.... does the circuit created an ac circuit across one side of the transformer via terminals 2&4.I admit to being stumped.I attach a JPEG of the circuit diagram

author: fzabkar
author_rank: Super Contributor
timestamp: December 31, 2022, 08:54:22 pm
content: The resolution of your circuit is too low.

author: punkieys17
author_rank: Newbie
timestamp: January 01, 2023, 03:19:38 pm
content: Large resolution picture posted

author: fzabkar
author_rank: Super Contributor
timestamp: January 01, 2023, 04:52:24 pm
content: The MOSFET chopper (Q1) is pulsed by IC N2. The secondary voltage developed by transformer winding 1-3 powers the IC via D6. It seems to me that this area of the circuit is drawn incorrectly.The datasheet indicates that Vdd should be 15V or greater.CR6850T, Chip-Rail, current mode PWM controller, DIP-8:https://avtronic.eu/medias/cr6850t/cr6850t.pdf(see pages 2 and 13)

author: wasedadoc
author_rank: Super Contributor
timestamp: January 01, 2023, 06:13:33 pm
content: R9, R10 and the unlabelled capacitor above C15 are the startup circuit which provides initial power to the IC until the 1-3 winding and R12, D6 come into operation. D6 is drawn reversed to what it should be.There should not be a direct connection between 7 and 8 of the transformer.D7 is drawn the wrong way around to get -8 volts.R171 is certainly not 1000 ohms.Re-examine how N2 and N3 are actually connected and correct your diagram. N2 does not appear to have a proper ground connection in your drawing.The Y1 capacitor at the bottom looks all wrong. Should not be between the FET drain and the zero volt line on the output side. I could expect it to be between the negative end of the 400 volt capacitor and the zero volt line on the output side. Or maybe from the FET drain to the negative end of the 400 volt capacitor.In future please use png format, not jpg, for schematics and other "clean" line drawings.

author: EPTech
author_rank: Regular Contributor
timestamp: January 02, 2023, 07:07:22 am
content: Hi, the supply may be in hiccup mode. This may be caused by a cc on the secondary or the switch ic not getting a steady working voltage. Try replacing the capacitor that lives between pins 2 and 8 of N2.Happy hunting.
Hantek PPS-2320A Repair Help - Page 1
Forum section: electronics / repair

author: deepskyridge
author_rank: Regular Contributor
timestamp: June 10, 2020, 08:14:46 pm
content: I have a Hantek PPS-2320A that I purchased new several years ago. It has worked well until last week.I turned it on and it blew the 5A fuse.I am looking for some service info on this model.Hopefully with schematics.ThanksGary
Hantek TO 1252D problem with "system info" - Page 1
Forum section: electronics / repair

author: andefim
author_rank: Newbie
timestamp: February 17, 2024, 09:39:01 pm
content: I purchased a new Hantek TO1252D oscilloscope. When I turned it on for the first time, it didn’t turn on from the batteries, so I put it on charge for an hour. Then I turned it on from the network, when I pulled out the cable it turned off again. I checked the batteries inside, they showed 2.65V and could not charge. I replaced the batteries and everything worked, but in the “system info” information about the model, serial number and version of the safety control panel was lost. Before this it was there since I checked the model number. I tried to flash the version from the office. website, only the firmware version was reduced, the information did not appear. The device is new, I just had time to calibrate the probe. Please help, I think it can be solved with firmware.
Hard drive 12v overvoltage protection zener diode replacement - Page 1
Forum section: electronics / repair

author: theleakydiode
author_rank: Regular Contributor
timestamp: July 30, 2023, 09:11:28 pm
content: Hi, I was given an external hard drive to retrieve files off but I think the wrong AC adaptor was connect to it and the 12v rail zener protection clamp ended up shorting I can't track down the exact park but it seems to be1SMB5927Bbut smaller.I can't seem to find any replacements that don't cost a small fortune for a one off hobbyist but was wondering if I canreplace it with a substitute and if anyone knows what I can use instead? I was thinking even a TVS diode but one rated for maybe 13v vs the 12v part that was on there as I feel this is probably under conduction in normal operation.The hard drive works with the shorted zener removed but I feel it might be a good idea to replace the diode given this is for an external hard drive.Any ideas?

author: fzabkar
author_rank: Super Contributor
timestamp: July 30, 2023, 09:23:16 pm
content: It should be a 12V TVS diode.TVS Diode FAQ:http://www.hddoracle.com/viewtopic.php?f=100&t=86

author: theleakydiode
author_rank: Regular Contributor
timestamp: July 30, 2023, 09:36:11 pm
content: Thanks. The part number on the diode looked like "ST (the logo) SU6 GP927". I was thinking it should be a TVS but googling brings me to zener diodes.I tried to get some pics.

author: fzabkar
author_rank: Super Contributor
timestamp: July 30, 2023, 09:46:46 pm
content: A Zener diode would be too slow. I would replace the diode with an SMBJ12A or SMCJ12A.

author: theleakydiode
author_rank: Regular Contributor
timestamp: July 30, 2023, 10:09:10 pm
content: Should I use a 13v TVS instead as it's for a 12v rail and mains 12v mains adaptors might put out slightly more like 12.5v?

author: fzabkar
author_rank: Super Contributor
timestamp: July 30, 2023, 10:39:42 pm
content: Just be mindful of the difference between standoff voltage and breakdown voltage. A diode with a standoff voltage of 12V will present an open circuit to a 12V supply, and it will only begin to conduct at around 13.5V.You need to be sure that your diode has a standoff voltage of 12V.