I just pulled some electrolytic caps off a fried motherboard. I didn't see any of the usual signs of failed caps before I pulled them, but after pulling them I noticed that some the bottom was slightly pushed out and pushing the against the plastic wrapper that is folded over the bottom. most are like 1000 -4000 UF too high for my meter to test in cap range which maxes out at 200UF. I remembered I have don it before using ohm meter setting. usually put on one way then meter rises then maxes out reversal usually does same thing.
last I did this was with my old DMM which max ohm was 2 meg ohm my new DMM goes up to 40 meg ohm. I try this test on the questionable caps it gets to about 2M ohm then it gradually starts heading back towards zero. does this mean those are bad or just result of using such high resistance range meter?
last I did this was with my old DMM which max ohm was 2 meg ohm my new DMM goes up to 40 meg ohm. I try this test on the questionable caps it gets to about 2M ohm then it gradually starts heading back towards zero. does this mean those are bad or just result of using such high resistance range meter?