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Tony_G:

--- Quote from: rob.manderson on August 04, 2018, 02:55:32 pm ---Out of Seattle so my guess was it was from Boeing - and sure enough there's the Boeing sticker on the top.  The seller claimed it was taken from a working system.  Uh huh - I can't think of a single reason, in 2018, for a GPIB bus analyser being in a production line system (which is the implication I read into 'taken from a working system').

--- End quote ---

Taken from a working system my arse. I hate that BS phrase with a passion....

I bought one a while ago, still waiting to clear bench space to do a video of it. Fortunately I have some similar generation gear so I can run it through its paces if mine also works. Looking forward to your repair log/video.

TonyG

bitseeker:
The seller just didn't say when it was taken from that working system. ::) :-DD

Berni:
I had bought a big Fluke precision 10kV PSU before that was listed as fully working.

Its pretty old so it has a permanently attached power cord. Just to be sure i tested the plug for any shorts and that i can see the transformer resistance looks normal. However i couldn't get any resistance reading to anything, even to the case. That is until i grabbed the crocodile clip and wiggled it around enough for it to dig trough the oxide layer. The PSU seamed to belong to a school and it has been sitting so long that the power cord is so oxidized it doesn't even make contact, upon closer inspection the prongs on the plug had a consistent layer of oxide all around without any mating contact marks, so the seller has not even tried to plug it in in likely the last 10 to 40 years.

Oh and there is also the fact that the fuse was missing and the case cover interlock switch had oxidized too so it needed to be clicked a few times to clean its contacts.

Yeah it was working... maybe 40 years ago.

Ice-Tea:
Three HP8648C's.

1) Works, but outputs 3-4dB too much. Calibration?  :-// In addition, the screen is odd. From below it is unreadable, from above it is perfect. Not sure what's up with that, maybe aftermarket jobbie
2) No go. Swapped the PSU with another unit. Boots now, good display. But ain't nothing coming out of the damn thing. Even though it thinks it does. And some stuff gets *hot*. As in "that blob of rubber used to be a standof".
3) A few errors, seems linked to a dead backup bat. Unfortunately, my ATTEN crapped out on my today, so no soldering for me.

Three HP66332A's

Booted up the first two: no go. Both had bad fuses.

...

...

I then figured out these weren't auto-ranging. No selector switch either (I checked - at least I'm that smart). Just hardwired 110V units. Which I could have figured out if I had botherd to check the option code (yeah, no print or label or whatever). So, that's two that went up in smoke. I'll rewire the third one later.

Not the best day I ever had.

PTR_1275:
If you want to part out those 2 66332a, let me know. I’ve got a few here needing parts to get them up and running. Front pcba (well mostly the display but it’s a pain to get out of the board) and possibly 1 control board if it didn’t fry.

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