HP 214B Pulse Generator repair question

Richard Rasker · 2010-09-06T13:57:21+00:00

Hello,I've been asked to fix a special piece of lab equipment, a Hewlett-Packard214B Pulse Generator, dating back from 1980 or thereabouts.The problem is relatively straightforward: a chain of components inthe -155V supply has blown: * PCB fuse F602, value unknown* Q601 and Q602 (MJ15003)Since the fuse (F602) has literally exploded, there's no way to determineits original current rating.The question of course is what caused this rather convincing supply failure;the main suspects here are the output tubes V401 and V402-- but I can't seewhat types these are either. I have a schematic diagram, but no part list,so I'm rather stuck.Does anyone have any experience with these beasties? Or could someone pointme to a service company which may perhaps provide the information on thefuse and the tubes? AFAICT, it's still a rather expensive piece ofequipment (~$ 6,000), so I really want to try and repair it.Thanks in advance for any information,Best regards,Richard Rasker--

Sep 06, 2010 21 Replies

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Jim Yanik 15 years ago

Richard Rasker wrote in news:4c8a502b$0$733$ snipped-for-privacy@textreader.nntp.internl.net:

don't forget you can ASK QUESTIONS of the seller on the eBay site,-before- making a bid or buy.

Jim Yanik jyanik at localnet dot com

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Richard Rasker 15 years ago

OK, thanks for the tip , but I just ordered the manual -- and it did indeed contain the parts list. I hope to get to work on it next week. And oh, the fuse was 3 amps slow, and the end tubes were 7534 (E130L, nothing like the PL519 at all).

So in all, I got the information I needed, and now I just hope that I won't need to hunt down new end tubes ...

Anyway, thanks again, best regards,

Richard Rasker

http://www.linetec.nl

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