Repair advice required: Sony TA-FA3ES Amplifier with burnt resistors

Thread Starter


Joined Oct 29, 2023
Hi, new to this site but read a similar post regarding resistors burning out on the output board and seems like the best place to ask for help. I'm new-ish to electronics but have repaired some audio equipment previously.

The (vintage) amplifier was damaged in transit and now when turning on two resistors burn out on the output board. I've taken off and tested a fair few components but this seems fruitless as they test fine. I've resoldered some cracked/cold joints and replacing the two burnt resistors doesn't fix the issue. I'm at a point where I am stuck on where to go from here, what to test, what to look for etc.

Schematic with annotations. Blue square = replaced component. Red dot = checked and ok.

Any help is appreciated