if its keying up with decent output but no audio first thing to check is the AM reg/mod transistor at rear right of radio,
measure the voltage on the bias test point board, should be about 6v on AM & about 13v on SSB,
if its close to your supply voltage on all modes the 2sa1012 reg is likely short,
good luck.
measure the voltage on the bias test point board, should be about 6v on AM & about 13v on SSB,
if its close to your supply voltage on all modes the 2sa1012 reg is likely short,
good luck.