My old Fluke 8375A is misbehaving. This might turn into a repair thread 
I think it has been getting worse, but yesterday the problem was so bad the meter wasn't much better than a 3 1/2 digit meter :-(
The main problem was that with a reasonably high value resistance (10k to 100k) the readings would occasionally be right, but were drifting in the last 2 (and sometimes last 3) digits.
It seemed to get a little better as the unit was left on for a while, but it was not really useable.
Oddly enough, occasionally (more often that you could attribute to chance given the +/- 300 or so in the last 3 digits) the reading was spot on.
My suspicion at the moment lies with the power supply. I'm going to have to take it apart to see if any of these 40 year old capacitors are not as good as new.
Looking a the documentation for this unit last night, I noted that it has a large number of germanium transistors. *wow*! I sure hope I don't have to replace any of those.
I think it has been getting worse, but yesterday the problem was so bad the meter wasn't much better than a 3 1/2 digit meter :-(
The main problem was that with a reasonably high value resistance (10k to 100k) the readings would occasionally be right, but were drifting in the last 2 (and sometimes last 3) digits.
It seemed to get a little better as the unit was left on for a while, but it was not really useable.
Oddly enough, occasionally (more often that you could attribute to chance given the +/- 300 or so in the last 3 digits) the reading was spot on.
My suspicion at the moment lies with the power supply. I'm going to have to take it apart to see if any of these 40 year old capacitors are not as good as new.
Looking a the documentation for this unit last night, I noted that it has a large number of germanium transistors. *wow*! I sure hope I don't have to replace any of those.
