My K2/100 seems to have developed an issue.

On key down I seem to be getting maximum power output, irrespective of where 
the power control is set. I am getting no power output indication at all on the 
inbuilt power meter in the K2!

When I press tune, the K2 tells me I have 9.9:1 SWR and only a few watts of 
output, but my external meter tells me I have full output (well over 100w, and 
a 1:1 SWR). This happens irrespective of whether I use a dummy load or antenna. 
The K2 seems to work normally with the KPA100 disconnected, and RX is fine.

I'm guessing I have a issue with the SWR/power output sensing in the KPA100, 
but would apreciate some help on what components to check.

The K2/100 has been working fine to this point.

Cheers

David, VK2NU

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