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Technics su8600

Aiden T

Aiden T

Member
Picked it up couple weeks back at an estate sale for cheap. Dirty so i cleaned it out cleaned all the pots and cleaned the relay contacts very well. I have no sound coming out at all. I checked the point of entry for the signal onto the amp board and have it clear so and i have clear signal back at the jumpers so i ruled out the pre amp. just wondering if anyone here has worked on this unit before. not a big fan since its one of those one board for everything units harder to narrow down issues. Im thinking something in the amp board the supports both channels since they are both out? any help would be appreciated Thanks.
 
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I do have this unit. Do you hear the relay click ? if yes the good start would be checking all the voltages +_ 48 V Main Rails, +_ 48 from emmiters of tr501/502, +_ 24 fro emmiter of TR503,504. If relay does not click then what is DC offset on both channels. Measure between ground and point 434 and between ground and point 435 for the other channel.
 
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