Tektronix TPS2014 scope  - Page 1
Forum section: electronics / repair

author: IconicPCB
author_rank: Super Contributor
timestamp: April 27, 2016, 08:53:42 am
content: A friend has a Tektronix TPS2014 four channel 100MHz isolated inputs scopeBehind each BNC conector there is a channel amplifier module. Two of four channels were misbehaving fora awhile and now the scope has failed completely.On powerup it reports failed channels and stops working.He has been told it will cost him in excess of 2K to have it repaired.Any familiarity with this scope and the fault out there?

author: tautech
author_rank: Super Contributor
timestamp: April 27, 2016, 07:07:03 pm
content: Quote from: IconicPCB on April 27, 2016, 08:53:42 amBy a Tek repair agent I'd guess.Could he fix it himself, meaning does he have the equipment and skills as it would likely be some SMD work.As for these TPS units, some are getting on a bit now so could the fault be partially failing electrolytics?

author: IconicPCB
author_rank: Super Contributor
timestamp: April 28, 2016, 12:35:27 am
content: Yes.. a Tek agent...In fact two separate organisations quoted 2.5 and 3.5K respectively.SMD is not an issue ..lack of information is.

author: tautech
author_rank: Super Contributor
timestamp: April 28, 2016, 04:06:11 am
content: Quote from: IconicPCB on April 28, 2016, 12:35:27 amSure, but given the basic Service manual info and some time for troubleshooting I'd be surprised if he couldn't crack it.Here's Tek's SM:http://info.tek.com/WW-Web-Manual-Download-Form-LP.html?title=TPS2000%20Series&part_num=077030600&file_name=077030600web_0.pdf2.12 MB

author: IconicPCB
author_rank: Super Contributor
timestamp: April 28, 2016, 05:02:45 am
content: Thanks Tau,The link worked.. got to present my contact info..got to press the download button.. page could not be found.. got to feel like a case of date rape.EDIT...Revisited the link..got asked for additional info.. got to press the button and eventually downloaded a Clayton's manual.One measly block diagram .. could not have been more superficial had they tried.. I had downloaded this "service" manual half a day ago without all the data mining nonsense.a blind date rape

author: nctnico
author_rank: Super Contributor
timestamp: April 28, 2016, 11:29:21 pm
content: It shouldn't be too hard to figure out how the circuit works. Begin with checking power and if that is OK trace the signal from the input to the rest of the circuit. At some point there will be an ADC so everything in between is a suspect. I've repaired lots of stuff without a schematic by just tracing a signal from a known good point to where it fails.

author: tggzzz
author_rank: Super Contributor
timestamp: April 29, 2016, 09:16:34 am
content: Quote from: IconicPCB on April 28, 2016, 05:02:45 amEven worse if it is the page I'm thinking of - where you can "Submit" without filling in any informationMore helpfully, the Yahoo! TekScopes is a mine of useful information and the denizens are friendly.

author: JPortici
author_rank: Super Contributor
timestamp: May 16, 2016, 03:52:29 pm
content: On google's first pagehttp://docs-europe.electrocomponents.com/webdocs/04c6/0900766b804c6b81.pdfI have one at work, still works like a charm but from time to time i want to smash it because it's so slow and the screen has almost no contrast.i wonder if i could at least change the lcd...(No schematic, lots of replace this board/exchange that board when something fails... two pages of replacable items and all chassis/front panel -language- related.Booo!)