Electronics > Beginners
fluke dmm, really need help
ArthurDent:
Manual info-
james_s:
Fluke meters are well known for being tolerant of abuse. The fuses are supposed to blow before damage occurs to the meter. They're not foolproof but I wouldn't assume there are issues just because of blown fuses. I've blown the fuses in mine a couple times too, not recently but it's easy to do if you're going back and forth between measuring voltage and current.
mzacharias:
The flaky behavior could have been due to intermittent switch contacts, both on the front main switch and the rear switch for the carbon tracks. Also, the carbon could have shed some, making for weird symptoms. Very common issue with the original 87, and the 87III is very similar.
I recommend De-Oxit D-100L with the needle applicator for the main switch. Do NOT spray any cleaner so as to get on the board itself.
Clean the rear carbon tracks with a dry cotton bud, or the same bud moistened with De-Oxit.
retiredcaps:
--- Quote from: mzacharias on July 15, 2018, 07:33:32 pm ---The flaky behavior could have been due to intermittent switch contacts, both on the front main switch and the rear switch for the carbon tracks.
--- End quote ---
see
http://mrmodemhead.com/blog/fluke-83-iii-rotary-switch/
Cody Turner OKC:
Hey guys, I got the Fuses from rsjsouza yesterday, and after spending hours working on the meter I have made a new post in the repair section about the Current input issues that consist, althought all the other functions work great! Thanks everyone for the help and here is a link to the new post if you would like to follow up!!
https://eevblog.com/forum/repair/fluke-87iii-broken-current-input/
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