This is coming from a PN50B450
Does anyone know how to test the buffer IC's for shorts on this Ysus/Buffer board?
Tested all the common resistors that usually blow.
I found the usual 6 mosfets shorted, Then found the driver IC (irs21956s) had a short. Replaced everything that but still same problem, sound but no picture.. Retested everything on the board and there are no shorts but I still have the same sound but no picture.
I still haven't replaced the other smaller driver IC (irs21856s) but it ohmed out good. (Haven't ruled it out yet though)
Only thing I thought left were the Buffer ICs, but how do you test these? (No obvious burnt marks)
Does anyone know how to test the buffer IC's for shorts on this Ysus/Buffer board?
Tested all the common resistors that usually blow.
I found the usual 6 mosfets shorted, Then found the driver IC (irs21956s) had a short. Replaced everything that but still same problem, sound but no picture.. Retested everything on the board and there are no shorts but I still have the same sound but no picture.
I still haven't replaced the other smaller driver IC (irs21856s) but it ohmed out good. (Haven't ruled it out yet though)
Only thing I thought left were the Buffer ICs, but how do you test these? (No obvious burnt marks)
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