Chris Hornbeck wrote:
On Wed, 10 Sep 2008 21:23:45 -0700, Tiger Luck
wrote:

The best odds-on bet is that despite everything posted
the cap is reversed. Sorry, but that's the main line.

Not a chance... cap installed correctly and worked for years.

Are you saying that *ONE* capacitor has failed? Not
a series of replacements? The thing's 30 years old - *all*
of the electrolytic cap's are bad now. That's life.

Replace *all* of the electrolytics and move on. They're
*all* bad. Parts are cheap.

I replaced all the electro caps less than two years ago. Amp worked fine up until
now. Polarity was and is correct. After cap blew today, new replacement cap over
heated. I shut off power before it blew out.



BTW, if your question had been about repeated failures,
the diagnosis would be: the cap got too hot. It got too
hot because it was defective, or it was exposed to too
high a voltage,

I checked voltage across cap terminals with cap out. It read correctly.

or it was exposed to reverse voltage,

Trust me. Polarity was correct.

or it was cooked by ESR.

Equivalent series resistance? Is that a measure of quality?

Caps are no-names, both from the same parts house. hmm...


So, for future troubleshooting, eliminate these four
and you'll have only a mystery remaining!



Good fortune,
Chris Hornbeck


--
Einstein forgot to carry the two