Did I pay too much? - Page 1
Forum section: electronics / testgear

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 01, 2023, 09:20:41 pm
content: Today I paid 1k euro for an Anritsu MS2667C that blow the fuse out when you turn It on.Did I spent too much on It? Did I got a great deal?Share your opinion because I have buyer remorse, but I can still sent It back practically for free.

author: thm_w
author_rank: Super Contributor
timestamp: March 01, 2023, 10:14:28 pm
content: Depends if its an easy fix or not.Do you know if they have a simple single voltage power supply?Looks like you can get a working one for $3500. No idea what the actual going rate is though.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 01, 2023, 10:19:56 pm
content: Unfortunally there is no way to tell if the repair will be easy.If the problem is only the PSU to supply lines I can no problem fix them, but I am much worried if the mixers and lna's are blown

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 01, 2023, 10:22:57 pm
content: Quote from: thm_w on March 01, 2023, 10:14:28 pmAlso the PSU it's this onehttps://www.ebay.com/itm/253658496545?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=haw4PeqwSEy&sssrc=2047675&ssuid=cT-stw5DQ-6&widget_ver=artemis&media=COPYthere are no schematics but it seems to be pretty straight forward.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 01:01:23 am
content: Quote from: thm_w on March 01, 2023, 10:14:28 pmIf you have any suggestions you are welcome

author: james_s
author_rank: Super Contributor
timestamp: March 02, 2023, 01:34:43 am
content: If a working one is $3500 then I'd say you did well. That depends of course on whether you can repair it or not. Power supply faults tend to be some of the easier things to repair on test equipment though.

author: coromonadalix
author_rank: Super Contributor
timestamp: March 02, 2023, 03:37:55 am
content: 1k for a non working unit, nah way too high700$ usd = around 660 Euros for the psunot good, it's a rip off,I would say you have at least 4 or 5 voltages coming out of it, it depends if the main / primary stage is fried / blown mosfets could be the causeAs written, could be easy or not, it will depend of your competences and knowledgeand the supply photos mmmmmm not sure, but doesn't seem clean to me, seems to have some reworked soldersBUT loll

author: coppercone2
author_rank: Super Contributor
timestamp: March 02, 2023, 04:46:28 am
content: I think its a great deal, it does 30GHz, and its small. IDK what the hell people are thinking here. I would just buy the replacement power supply, its still good.Probably better to buy PSU then try to fix it in case you fix it wrong and blow up a rail with something important on it.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 09:57:43 am
content: Quote from: coromonadalix on March 02, 2023, 03:37:55 amI would repair the one in the unit itself, this one is just an example of how it's made

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 09:59:26 am
content: Quote from: coppercone2 on March 02, 2023, 04:46:28 amI kinda agree on that, in fact the PSU doesn't worry me, it's the RF section that worry me, because there are a ton of propietary components

author: coromonadalix
author_rank: Super Contributor
timestamp: March 02, 2023, 11:03:54 am
content: And the basic problem(s) when you buy stuff is : how can you repair some of them IF you dont or wont get acess to an service manual w schematicsyeah you could be lucky or not .... always on a balancefor me it's still a no but i understand the deal if it work after repairs ..... another BUT, calibration if ever needed ?? supplemental costs maintaining this one or any equipment piece ...found theses: could get some hints, infos, voltages ..... some have seems to have schematics or bad scanninghttps://www.download-service-manuals.com/en/manual.php?file=Anritsu-12869.pdfhttps://dl.cdn-anritsu.com/en-au/test-measurement/files/Manuals/Operation-Manual/MS2665C_67C_68C_M_W1335AE_Vol_2.pdfhttps://www.opweb.de/english/company/Anritsu/MS2667Chttps://nscainc.com/wp-content/uploads/pdf/A_MS2665C.pdfhttp://manuals.repeater-builder.com/te-files/ANRITSU/ANRITSU%20MS2665C,%2067C,%2068C%20Vol.%201%20Basic%20Operating.pdfDo some search in the same family ....good luck

author: Miti
author_rank: Super Contributor
timestamp: March 02, 2023, 03:14:49 pm
content: Quote from: NiaDebesis on March 02, 2023, 09:59:26 amIn general, a defect in the RF section doesn’t blow the fuse, the switching PS should have current limit that kicks in before the fuse blows. In general.

author: switchabl
author_rank: Frequent Contributor
timestamp: March 02, 2023, 03:41:47 pm
content: It's always hard to judge the value of niche used (never mind defective) test equipment.+ fairly modern and compact+ 30 GHz is somewhat rare (26.5 GHz more common, does this matter to you?)+ broken PSU is mostly a good sign, decent chance it is fixable- Anritsu is not great with service manuals- 1 kHz minimum RBW unless it has Option 02 or 03- low-end model, phase noise in particular is not great- limited signal analysis (FM only)Instinctively I'd say it's not exactly a bargain but if it fits your needs and you think you can fix it, the price is probably ok.

author: shakalnokturn
author_rank: Super Contributor
timestamp: March 02, 2023, 04:00:28 pm
content: If it's only a power supply problem l'd call it a good deal. Aren't the PSU's a known problem on these?It's doubtful the RF section was wrecked before the PSU went bad unless it has been stored in harsh conditions for ages.Then there's still the case where you've been sold a unit pieced together with all the defective parts from several others. Some sellers do that... It's almost as honest as selling non-working equipment with missing parts and forgetting to mention itYou won't know if you return it.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 04:36:20 pm
content: Quote from: switchabl on March 02, 2023, 03:41:47 pmFor now It meet my requirements.Do you think the options are software base or hardware based?

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 04:41:47 pm
content: Quote from: shakalnokturn on March 02, 2023, 04:00:28 pmThe Sellers bought the equipment in bulk, I am worried that when It was used someome fried the front end.This Is what I am worried about, I am fairly familiar with RF up to 60GHz.The Sellers also told that he powered up fine for a bit the first Time the kaboom, so the culprit for me are the filtering caps/mos

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 04:42:44 pm
content: Quote from: Miti on March 02, 2023, 03:14:49 pmI am worried that when It was functional someome fried the front end.The fuse problem Is sure thing located inside the PSU

author: switchabl
author_rank: Frequent Contributor
timestamp: March 02, 2023, 05:09:34 pm
content: Quote from: NiaDebesis on March 02, 2023, 04:36:20 pmThis is an old-school design with no digital IF. All the options are hardware.The service manual has some infos on the options:Quote from: coromonadalix on March 02, 2023, 11:03:54 amThere are option boards for Options 04, 06 and 07. There is a separate path on the IF board for narrow RBW settings that downconverts to a lower IF frequency and is apparently not populated without Option 02 or 03.

author: Martin72
author_rank: Super Contributor
timestamp: March 02, 2023, 09:42:25 pm
content: QuoteIf the input fuse blows immediately on power up, it is very likely to be the power supply itself and then on the primary side.(Input rectifier, -capacitor, switching FET(s) )PSUs are having overload and short circuit protection for the outputs, so chances are good that if the psu are defective, the rest is working.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 10:59:19 pm
content: Quote from: Martin72 on March 02, 2023, 09:42:25 pmThis is exactly why I bought it, I just hope that when it was in working conditions someone didn't put in input dc or a high power signal.

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: March 02, 2023, 11:00:07 pm
content: Quote from: switchabl on March 02, 2023, 05:09:34 pmDo you think that they have to be enabled also via software ?

author: switchabl
author_rank: Frequent Contributor
timestamp: March 02, 2023, 11:21:51 pm
content: The service manual shows a maintenance menu where you can enable the options, assuming that the hardware is present.

author: Swake
author_rank: Frequent Contributor
timestamp: March 09, 2023, 08:28:07 pm
content: Is that thing still on the road?You got it last Wednesday from a French seller right?