Quote:
Originally Posted by andy
Bad caps typically have 10-100 times the normal ESR. A cap that's just a little high in ESR usually won't stop something from working, but it may be a sign that it's close to the end of its life.
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Be sure to keep this in mind... the chart that I linked to above is typical for new caps, some increase is normal over useful life. Caps that have 10 times or more than typical new value are suspect.
I have even seen new (cheap) caps that were about 2 times the value stated on the chart and they seemed to work ok, while higher quality brands usually beat the chart number by a significant margin.
jr