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Old Fluke Multimeters

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ehobby:
Just a quick follow up on the earlier discussion about C19 polarity. I just went through the cap replacement on my 8060A and noted that the factory install for C19 on my 8060A was correct per the silkscreen (- away from the display). This was an earlier model with the single chip TRMS converter and from factory there was no C28 loaded. I was lucky in that only three caps had started to leak and had no PCB/component damage. Had this thing since new and it has worked flawlessly the whole time.

I have over a dozen Fluke meters/counters. All continue to work and hold cal very well. Only run into two problems in the last 40 years. One 8000A had one 7 segment display fail, which I replaced with a similar display. Pretty easy fix and you can't tell from the outside.  One of the 45s developed a low resistance measurement error, after about 20 years, which turned out to be a cold solder joint on a resistor pack. Again an easy fix.

Regards

scopeman:
Hello DR Taylor,

On the subject of the 8860A. I have one of those where the metal can transistor has come loose from the A1 hybrid module for the ohms converter. Do you happen to know if that part was soldered to the substrate or was conductive silver epoxy used? I have some 3.5%Ag solder that I could use to attempt to fix this module if it is in fact soldered.

I found out that it is soldered. I resoldered it with some low temp solder that I had as a sample from Indium Corporation. Worked like a champ!

Do you have any suggestions in that regard as I would like to get this unit fully functional again. I doubt that there are any sources for these ceramic hybrid modules anymore.

The calculator function or GPIB would be nice but I have not seen them anywhere either.

Thank you,

Sam
W3OHM

mansaxel:

--- Quote from: Rita on September 21, 2021, 08:35:50 pm ---
(The downside of reading this thread is that I now want 8060.)

--- End quote ---

Yes, you do. Come to the dark side. We have cookies. And somewhat large collections of vintage multimeters.

Rita:
Tack.

It sounds like an EEVblog fika.

med6753:
And then you'll want an 8600A or perhaps an 8050A or really go big time for an 8800A.

There's even more higher than that but I'll stop for now.  ;D

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