Due to an unlucky combination of station configuration and a bad TX gain
calibration in my K3s (since corrected) I've managed to burn out
something in the front end chain in my second station K3. I've verified
the problem is in the signal path between the ATU inputs and the input
to the main receiver. The Sub receiver is working correctly when
connected via the AUX RF input connector, but dead in normal split mode.
I've had a look at the schematic and can see a couple of probable points
of failure.
But... I wonder if anyone else has encountered the problem and done a
successful field repair. I'd have no particular trouble replacing one or
two parts on the main board, but without a board layout it would take a
fair amount of effort to find the suspect parts. I'm also not interested
in completely dismantling the radio if that's what it would take to
effect the repair.
Has anyone else found and fixed such a problem? I'd be very interested
in hearing your experience.
73...
Randy, W8FN
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