| Electronics > Repair |
| HP 6114A Newbie Repair |
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| coppercone2:
good idea, maybe give it 1 layer of self amalgamating tape over it because it wont have a bond failure like kapton or a giant segment of heat shrink. but what pissed me off about those switches is the spring loaded bits :rant: |
| AlpineJoe:
--- Quote from: garrettm on December 12, 2023, 12:05:03 am ---Just wrap the re-assembled switch stack in kapton tape. That's what I did. This way you can clean the switches again--if needed--by simply removing the tape as opposed to possibly destroying the switch housings by trying to pry apart glued together plastic. --- End quote --- Finally decided to work on my 6114A, but already disassembled, cleaned the contacts, and reassembled and used the tiniest dot of uv cure epoxy in the front two corners and two more spots near the rear posts to hold it back in place before I read your reply. Cleaned up the rest of the unit by blowing it out with compressed air and using a dry flux brush. Time to power it back up and see what the next problem is. |
| coppercone2:
probobly the switch lol :( and I figured out how to hold it together finally, you can use a zip tie :-DD |
| AlpineJoe:
Powered it up last night and was amazed that it pretty much works - except the output voltage is way off. Dial up 1.00 and I get 1.37V. 10V setting and I get 13.7V. I measured the voltages at the A2 board and the +16V is measuring 22.8V! Okay, need to figure that out. So just my luck, it ends up that R8A is open. Why couldn't it have been one of the easier to replace parts? 15.82K 0.1% 1ppm. Why would this fail. . . . Sifted through my 1/4W resistors and found a combination that gets me close - installed it and my 16V reference is near 16V. Pushbutton settings give me close to what is expected. Now the search for proper replacement. |
| coppercone2:
you can try :-// https://www.heisener.com/ProductDetail/Y000715K8200V0L good luck https://www.integrated-circuit.com/products-detail/Y000715K8200V0L/EIS-2897594.html https://www.digikey.com/en/products/detail/stackpole-electronics-inc/RNCF1206TKW15K8/16206097 |
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