Hosed by my MSOX-3024A - Page 1
Forum section: electronics / testgear

author: mclemens1969
author_rank: Contributor
timestamp: February 08, 2017, 03:08:37 am
content: 1) invest $5000 in a Agilent MSOX scope2) spend $1500 unlocking software for itFast forward past the end of the 3 year warranty. It dies. The magic smoke comes out. It stinks and turns off.3) They quote me $2250 to repair it. Flat-rate. Doesn't matter the issue.I'm afraid at this point that pretty much throws my $6500 investment in the garbage.Any advice?if it's the line filter board or the SMPS board can they be acquired at lower costs?Thanks for any guidanceMike

author: TheSteve
author_rank: Unknown
timestamp: February 08, 2017, 04:05:48 am
content: It isn't hard to open it up to access the power supply. Take a peak to see what it looks like.

author: tautech
author_rank: Super Contributor
timestamp: February 08, 2017, 04:15:58 am
content: You're not the only one to have suffered such failures.....https://www.eevblog.com/forum/testgear/agilent-dsox2024-won't-boot/https://www.eevblog.com/forum/testgear/oh-no!-i'm-never-buying-any-agilent-keysight-equiment-ever-again!/

author: mclemens1969
author_rank: Contributor
timestamp: February 08, 2017, 04:29:23 am
content: Worst case... instead of their $2250 repair.... could I use the SMPS and line filter board from a $~1200 70 mhz "2000X" model?ANDDDD...... this photo is what I found. I am thinking there is a good chance I could just replace this power supply??

author: TheSteve
author_rank: Unknown
timestamp: February 08, 2017, 04:43:11 am
content: You can buy the original power supply direct from Keysight for ~ 200 USDPart # 0950-5277

author: EEVblog
author_rank: Unknown
timestamp: February 08, 2017, 05:36:03 am
content: Ouch!That PSU option replacement sounds reasonable if you didn't want to repair yourself.That look primary side, so hopefully hasn't taken out anything on the main board.

author: Monkeh
author_rank: Super Contributor
timestamp: February 08, 2017, 05:49:01 am
content: I'm thinking there's a pretty good chance you could just repair the thing. I mean really, it's a $5000 scope, you should be capable of repairing a boring low frequency SMPS.

author: mclemens1969
author_rank: Contributor
timestamp: February 08, 2017, 05:53:45 am
content: Quote from: Monkeh on February 08, 2017, 05:49:01 amI would gladly try to replace the part on the SMPS. Under that metal plate TO-220 retainer the package is literally exploded. I have no idea what part to put in there.When stuff blows up like this, what are the chances I replace the SMPS and the second one blows up immediately? Or, is this quite likely just a blown power supply and if i replace that unit it will power up happy again?Mike

author: Monkeh
author_rank: Super Contributor
timestamp: February 08, 2017, 05:55:23 am
content: Quote from: mclemens1969 on February 08, 2017, 05:53:45 amHigh odds the same as the one next to it, if not, the one on the other pair.. You could also take an educated guess from the other part if they're not matching.

author: nctnico
author_rank: Super Contributor
timestamp: February 08, 2017, 12:38:08 pm
content: Quote from: mclemens1969 on February 08, 2017, 05:53:45 amThe MOSFET/transistor could have been degraded and finally failed. All in all I don't think the problem is any bigger than that. SMPS are current limited so the chance the load causes an SMPS to fail this way are practically zero.I'd probably take a stab at repairing it just for fun. It seems there are multiple MOSFETs/transistor in some kind of parallel/bridge configuration so looking at the non-broken Q1 through Q4 may give some clues as to which part is a suitable replacement. Maybe you are not the only one so I'd also Google the PSU's model number and see what comes up.

author: CJay
author_rank: Super Contributor
timestamp: February 08, 2017, 12:42:57 pm
content: Quote from: nctnico on February 08, 2017, 12:38:08 pmI agree, it's rare to find a well designed, decent quality SMPSU that kills more than itself or that was killed by something on the secondary, besides, it's 'only' $200, taking a chance on that being a waste of money is far better than hacking out several thousand $ on a new 'scope.Definitely worth taking a multimeter to the power supply connections to make sure there aren't any shorts though.

author: casinada
author_rank: Frequent Contributor
timestamp: February 08, 2017, 05:07:55 pm
content: Talk to Daniel from Keysight.

author: georges80
author_rank: Frequent Contributor
timestamp: February 08, 2017, 05:53:19 pm
content: OP - and you are located where in the world???At least in the US the x2000/x3000 series has a 5yr warranty...cheers,george.

author: CJay
author_rank: Super Contributor
timestamp: February 08, 2017, 06:10:04 pm
content: And it even looks like it might be an off the shelf part, you can find Lineage PSUs for sale via a few well known distributors.

author: Keysight DanielBogdanoff
author_rank: Unknown
timestamp: February 08, 2017, 06:56:24 pm
content: Ouch, I'm sorry to hear you're having this issue! I also know that out-of-warranty repairs can be expensive. Unfortunately, if it's out of warranty there's not a lot I can do. How far out of warranty was it when it broke?Quote from: mclemens1969 on February 08, 2017, 05:53:45 amI would fully expect that it wouldn't blow up again, the power supply doesn't really rely much on other parts of the scope.

author: mclemens1969
author_rank: Contributor
timestamp: February 10, 2017, 10:06:15 pm
content: Quote from: georges80 on February 08, 2017, 05:53:19 pmHello, I am in the USA, but the warranty was 3 yrs. I bought from Newark. Why would I get a short warranty?

author: mclemens1969
author_rank: Contributor
timestamp: February 10, 2017, 10:11:15 pm
content: Quote from: Keysight_DanielBogdanoff on February 08, 2017, 06:56:24 pmDaniel, can you tell why my warranty was only 3 yrs although I am from the USA?

author: TheSteve
author_rank: Unknown
timestamp: February 10, 2017, 10:37:42 pm
content: From what I can find the DSOX2000 series has the 5 year warranty, the DSOX3000 series has a 3 year warranty.

author: georges80
author_rank: Frequent Contributor
timestamp: February 11, 2017, 12:05:10 am
content: Quote from: TheSteve on February 10, 2017, 10:37:42 pmYeah, appears you are correct. I have an msox2024 and knew that was 5yr - I bought as a certiprime from the agilent/keysight ebay store and saved a small bundle. Seems crazy that the higher end msox3000 would only be 3yrs....cheers,george.

author: mclemens1969
author_rank: Contributor
timestamp: February 11, 2017, 04:37:00 am
content: Actually I think I might be out of the 5 yr mark too... maybe close.I ordered a replacement SMPS.... it's halfway here already. Serious kudos to Keysights magical phone system. I picked the first phone number I saw on a website. I called it and asked the first person I talked to for a replacement part and he took my order right there and knew all my shipping info already.So... if I take my multimeter to the SMPS output harness, what kind of resistances are expected and between what.Thanks for your insights!Mike in Alaska

author: Someone
author_rank: Super Contributor
timestamp: February 11, 2017, 04:43:06 am
content: 5 year warranties came after the release of the series, early units only had 3 years warranty.

author: nctnico
author_rank: Super Contributor
timestamp: February 11, 2017, 11:35:09 am
content: Quote from: mclemens1969 on February 11, 2017, 04:37:00 amI'd just hook it up and see what happens. Your PSU probably got killed by a mains surge so a surge protector might be a good investment.

author: rachaelp
author_rank: Unknown
timestamp: February 12, 2017, 12:43:19 pm
content: Quote from: mclemens1969 on February 11, 2017, 04:37:00 amMaybe once your scope is back up and running with your new PSU you should take a shot at fixing the old one anyway so you have a spare in case this happens again? Should be a fairly straightforward fix...

author: mclemens1969
author_rank: Contributor
timestamp: February 13, 2017, 11:56:49 pm
content: Quote from: rachaelp on February 12, 2017, 12:43:19 pmI will give it a try for sure and report back. The replacement part arrived from keysight today, but they sent me the completely wrong part. (Wrong part #, wrong everything, even though the enclosed invoice specifies the correct part number and name.)SO..... back on the phone with them. I am glad their service was excellent last time.

author: TheSteve
author_rank: Unknown
timestamp: February 14, 2017, 12:19:51 am
content: Quote from: mclemens1969 on February 13, 2017, 11:56:49 pmWell that sucks - did they at least send you something good?

author: mclemens1969
author_rank: Contributor
timestamp: February 14, 2017, 03:24:44 am
content: Quote from: TheSteve on February 14, 2017, 12:19:51 amIt's a 5063-1700 2.4mm bulkhead connector. : )

author: TheSteve
author_rank: Unknown
timestamp: February 14, 2017, 03:29:21 am
content: Quote from: mclemens1969 on February 14, 2017, 03:24:44 amWow, did you see what the sucker is worth?Me thinks they will want it back...

author: Keysight DanielBogdanoff
author_rank: Unknown
timestamp: February 14, 2017, 06:38:55 pm
content: Quote from: mclemens1969 on February 13, 2017, 11:56:49 pmThat's obnoxious, sorry to hear that!

author: rachaelp
author_rank: Unknown
timestamp: February 14, 2017, 06:47:06 pm
content: Quote from: mclemens1969 on February 13, 2017, 11:56:49 pmOh how annoying.... Hopefully they'll get it right second time. My experience so far of their customer service here in the UK has been very good so hopefully they'll rectify their error quickly for you.

author: mclemens1969
author_rank: Contributor
timestamp: February 14, 2017, 10:12:51 pm
content: Quote from: TheSteve on February 14, 2017, 03:29:21 amWoohoo, you're not kidding... that's worth almost 6 SMPS for my scope.That should help get the FedEx's flowing !

author: mclemens1969
author_rank: Contributor
timestamp: February 16, 2017, 11:03:42 pm
content: YES !!!The SMPS arrived today.Keysight was kind enough to send me a prepaid FEDEX label to get their wrong part back to them.My 3000X, having walked through the valley of internal-shooting-SMPS-flames, lives again. I am going to get a $150/year repair plan immediately.Mike

author: Keysight DanielBogdanoff
author_rank: Unknown
timestamp: February 16, 2017, 11:19:26 pm
content: Awesome! Glad it worked

author: Kean
author_rank: Unknown
timestamp: February 17, 2017, 12:47:35 am
content: Great news Mike!I'm contemplating my next scope upgrade and stories like this with happy endings are very helpful

author: Dubbie
author_rank: Unknown
timestamp: February 17, 2017, 12:56:42 am
content: Daniels interactions here was one of the reasons I chose to go with Keysight for my scope.Same goes with Tautech for my SAFaceless companies are not very appealing to deal with.

author: Neganur
author_rank: Unknown
timestamp: February 17, 2017, 07:52:49 pm
content: 150$ per year is certainly a no-brainer.Wish the rep agreement for some of their other gear was like thatEdit: autocorrect accident.

author: mclemens1969
author_rank: Contributor
timestamp: February 17, 2017, 08:41:08 pm
content: Quote from: Neganur on February 17, 2017, 07:52:49 pmMy mistake! $120/yr, an even more obvious no-brainer.

author: mclemens1969
author_rank: Contributor
timestamp: February 25, 2017, 02:24:34 am
content: When I reinstalled my scope on the bench shelf, I noticed that the combination of my bench power supply, Agilent and Rigol scopes all next to each other were making quite a bit of heat. Plus the shelves are not ventilated, they are solid wood. The heat was building up. This may have led to the death of the scope eh?I installed 100mm computer fans at each end of the row of equipment so it's blowing fresh air behind the whole group of equipment. It's made a very big difference, subjectively anyway.

author: gerrysweeney
author_rank: Regular Contributor
timestamp: November 27, 2019, 10:30:05 pm
content: Hi @mclemens1969Turned on my scope tonight (MSO-X-3024A) and I seem to have gotten the exact same failure, a crack, and a nasty magic-smoke type smell... makes you wonder if there is a design issue here. Anyway, I am well outside warranty so I was wondering what you paid for the replacement PSU?ThanksGerry

author: HighVoltage
author_rank: Super Contributor
timestamp: November 27, 2019, 10:40:32 pm
content: Usually these power supplies are easy to repair.I had one failure where just one power resistor was broken.