You should at least test the electrolytic caps in the startup circuit.

Since as I recall, it blows up only when applying AC power suddenly, something
funny is going on during startup.

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"Henry Kolesnik" writes:

As of this moment it has run over 26 hours without shutting down. I've
never seen any evidence that ESR can be an intermittent phenomena. Can
someone please tell me how intermittent ESR comes about?

--

73
Hank WD5JFR
wrote in message
oups.com...
Henry Kolesnik wrote:
snipped:
At this point I'm not willing to do a
shotgun replacement of all the caps. I do keep running the power
supply and
the condition is not getting worse. I wish it would fail so I might
find
the failed component. The way it is now it's impossible to
troubleshoot
without shotgunning.




Henry:
Looking for cracked circuit board connections AND testing the
electrolytics with an ESR meter (or substituting electrolytics if you
do not have an ESR meter) is NOT "shotgunning".... it is real
troubleshooting advice as a result of the symptoms you posted. If you
continue to use it with the problem you reported it may fail completely
and be a bigger repair job.
Pay a little now Or pay a lot later.
electricitym