DIYbanter - View Single Post - Sony 5.1 receiver model:STR-DE345

wrote:
Sony 5.1 A/V receiver model:STR-DE345,year:Jan 2000.No power only
relay click I found F901=3 amp fuse to be open when I connected a 100
watt bulb inplace of F901 and pressed power button the light bulb lit
bright and still no display.

snip

Thanks in advance.

Sidney
Dartmouth,Nova Scotia
Canada

Despite your previous testing, my money is on one or more shorted output
transistors. These often also get emitter resistors open, and in turn when
that happens there are often bad 2SA988 protection circuit "gate"
transistors as well, even some small resistors associated with them.

Mark Z.