Help needed troubleshooting KA-405

i still need to go over everything again and see where we are up too . my memory is overloaded with lots of stuff at the moment .
 
ok we have sort of gone backwards a bit but a bit forwards . was the holidays .
r48 r50 need testing . power off .they should read 0.47 ohms . they are the big ones next to the outputs . if they look good we need to be checking the driver transistors q16 q18 . these really need removing from the board first . but you could test and compare to left channel . a short circuit will be obvious . also looking for open circuit or wacky readings .
 
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