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Fluke 8000A Multimeter Reading 1/2 of Actual Values
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tggzzz:

--- Quote from: tautech on January 18, 2024, 06:29:51 am ---Eeeek, a TANT !  :scared:



Just because it's lollipop red don't think it won't throw a curveball somewhere down the track.
Get that sucker outta there for a new and higher voltage rated one.

--- End quote ---

Two tants, actually.

One is cheap and nasty, and it might be worth replacing it. If it is operating at half its voltage limit, I would be less concerned than having 13V on a 15V tant bead (thanks for nothing, Tek!)

The other (TRW) is very expensive (>£50 replacement) and probably still good. Only replace it if it has spewed acid across the board :)

To the OP: when measuring power rails, measure the DC value and the ripple. The ripple can give a clue as to whether an electrolytic has dried up.

With that in mind, I'd look at those blue Philips electrolytics.
NoisyBoy:
I have two of those. One thing that has not been mentioned is cleaning the push switches, use some DeOxit to clean them out whether this is related or not. I have seen switches that have not been operated for a long time cause various measurements issues.

After you applied DeOxit, operate each switch 20-30 times to clean them out.

Those caps are very old, I did purchased all new caps for the two 8000A I own, but when I pull them out and measured them, they were all within spec. But given the age, it wouldn’t hurt to replace them.

Good luck.
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