I was transmitting on am with a wilson 5000 antenna ,swr was 1.3 all was fine till i lost am transmit.Went to sideband mode and transmitted fine for a few minutes then lost recieve audio and sideband transmit all at once .I replaced q54 and q55 and now i have am transmit and sideband transmit and the meter shows rx but no audio out of speaker or ext speaker pa works great too alway did .I need to know what to look at and mabe voltages to check to get my recieve audio back.Cant see any traces burnt or any visual problems.Also the squelch does seem to work and there is very little low static coming from speaker.Meter is showing recieve.