[Elecraft] KPA500 fan shut down problem

[T Gahagan]

I’m wondering if anyone else has had this problem?  When I shut down the KPA500 from the front panel the cooling fan turns on and instead of shutting down it continues to run until I turn the power off on the rear panel.  When I turn the  back panel power switch on again the fan immediately comes on and never stops until the back panel switch is turned off.  I originally had this problem 3 years ago and Elecraft had me install a SMT bypass capacitor on the back of the front panel board that I thought had taken care of the problem (It did for several years).  I have reloaded firmware, done a full reset, etc. but the problem persists.  The amp work perfectly other than this glitch.  Any help is appreciated.

Thanks, Todd

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