[Elecraft] KPA500 suddenly will not provide amplified output

[mike]

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 



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