I think problem solved...at least one. You stated you used 2sc2904 - an NPN, on the 1277 board. This board requires a PNP transistor for instance a ksa1220. The F-1231 (plus filter board) requires an NPN. Please check and confirm.
What is still a little strange is that the boards are not dedicated left side, right side - each plus/minus board serves both sides. So I'd expect the misplaced NPN tranny on the 1277 would cause trouble on the the left side as well
I try the light with removing the output same thing. and yes its the r847 that start burning
I didn't work on the left side yet, I don't want to be confused I had a ksa1220 there before, I will try again tomorrow, I have some visitor now
thanks everyone for the help so far
I'm sure I dont have that wacky double-diode-to-ground-arrangement in my 999, altho I could be wrong?
I think problem solved...at least one. You stated you used 2sc2904 - an NPN, on the 1277 board. This board requires a PNP transistor for instance a ksa1220. The F-1231 (plus filter board) requires an NPN. Please check and confirm.
What is still a little strange is that the boards are not dedicated left side, right side - each plus/minus board serves both sides. So I'd expect the misplaced NPN tranny on the 1277 would cause trouble on the the left side as well