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KPA has FAILED...high SWR reported by K3 when amp in "Operate"

Posted by ke9uw on Mar 14, 2012; 1:37pm
URL: http://elecraft.85.s1.nabble.com/KPA-has-FAILED-high-SWR-reported-by-K3-when-amp-in-Operate-tp7371793.html

My KPA500 causes a high SWR showing at the K3 when the amp is in transmit operate. All else seems to work ok...reloaded firmware...checked faults...something about "power lost without controlled shutdown".

Any ideas? Pin diode?
Chuck, KE9UW