I'm wondering if the original 2SB817E and 2SD1047E output transistors can be replaced with FJA4213OTU / FJA4313OTU? One failed channel. I'll probably have to service both channels. Thoughts?
Probably. They have been good subs for all of the non-darlington Japanese transistors that I've seen.
Just make sure that the biasing remains OK through the full range of operating temperature (up to thermal shutdown).
Just make sure that the biasing remains OK through the full range of operating temperature (up to thermal shutdown).