Question about Sony STR-DB940 Receiver
I just bought cheaply at an auction a Sony STR-DB940/ FM STEREO/FM-AM RECEIVER. It was touted to be working, and power up is good. Selectors, DSP, Tuner all work and audio is accessible via pre-out (2ND AUDIO OUT).
All output though is dead.
Opening up the unit you I found both fuses (125V 8A) on DC (1) are blown. On replacement they blow immediately. The only output on the board (CNP802) feeds Main Board with B+ and B- 61.1 V. Looks like this is the main amp/ booster that then feeds each bias board.
My question is what would be the best method of fault finding what is shorting out/ loading the circuit? I cannot feed the power the check voltages. Has anyone come across this and got ideas in what could be wrong?
Thanks in advance.
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Posted on Jan 02, 2017
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