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Sony HCD-EH45DAB - No sound on radio.

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astracat:
hi turnip
remove q704 apply power then intermitantly short its collecter to ground to reset system control ic ,if that doesnt bring to life the radio side then q704 probably ok, if every thing works ok then replace q704 its a darlington type transistor. could also try reflow on x102 also these required to to be correct
i/c601,pin 5 1.2v,q191,q194,q196 q198 to give out 3.3v all voltages when on radio function
good luck
regards
astracat

Turnip:
Thanks 'Cat'

Note Q704 is a switching npn transistor with resistors base and base to emitter - Not a darlington dual transistor.

Replaced Q704 but exactly the same.

Tend to feel I'm out of luck, don't care try reflow chips as they never get warm enough to be an issue.

Guess can't win 'em all - Many thanks though - Chris.

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