Have him also try a Pa test with the spkr plugged in the pa slot to see if the mod section is working or not. Is the radio TX modulating? if so, wouldn't the chip still be good? One other thought, maybe the legs of the spkr jack is pulled loose from the circuit board. Good luck with it,, Mechanic
Well, first your pa does not go thru your audio chip,take the cover off,with the radio circuit board down, the audio chip is on the right side-rail,the chip close to you, now turn it over and inspect it for cold solder joints,if you need to replace it you have to heat sink it with heat sink silicone, to remove it you need wire wick,it soaks up the solder,make sure you clean the old off with a paper towel,use 60-40 rosin core solder........hope this helps.....
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