Help with my SA-7800, please

mrjbq

Bose forum Moderator
Subscriber
i got this out to play it after some time. I used DeOxIT, and everything is great except the phono input. It plays at very low volume, almost undetectable. What could be wrong?
I appreciate any help. Thanks.
 
Check power supply voltages and the bias voltages on the phono eq pcb. against the schematics in the service manual.
Check interconnections thru the switches with an ohmmeter with power off.
Check that your TT is working correctly by connecting it to another amp.
 
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