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KPA500 suddenly will not provide amplified output

Posted by mike on Jul 15, 2014; 4:18am
URL: http://elecraft.85.s1.nabble.com/KPA500-suddenly-will-not-provide-amplified-output-tp7591188.html

Although I doubt if it is related, I just updated the K3 FW to 4.86 from 4.83. I used the KPA500 for first time after K3 FW update this evening and when I switch KPA500 from STBY to OPER I get only the K3 25 or so watts out. K3 shows asterisk to right of power on display so it is working okay (knows to switch to lower power to drive amp). Set up is full Kline K3/P3/KAT500/KPA500 all with most current FW. Never happened before. Antenna(s) always hooked up to amp via KAT500 and pretty much resonant even without the exteral tuner. Power loss is for all bands 10-80. Where do I look? Help appreciated. ..mike AI6II