Discussion in 'Exclusively Sansui' started by micaiahm, Jul 9, 2017.
is it both channels ?
try switching the speakers off then power on and count 2 seconds after relay clicks before switching speakers on . see if it pops .
Speakers off. Power on. Relay engage. Speakers on to A. No pop.
looking like the timing cap needs upping some more to give 6 seconds . which isnt out of line with many manuals that state several seconds .
the only other thing i can think of is try another relay drive transistor with higher vbe . so it will need more voltage to turn on . you could try and monitor its base voltage now and see what the voltage is when the relay clicks in .
So I put in a 1200uf 16v cap, had it laying around, and it made the difference. It is about a 6sec timing now. No more speaker pop.
Thanks for all the help. Now that I have tunes again, back to the 1280.
nice one .
Good stuff! Well done.
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