Probably som point in the signal path is floating and charges up to some DC voltage that squeezes off its ability to pass signal.
I would use all the various jacks, inputs, outputs to see if we can determine which parts of the system still work, and which do not.
Inside I would start with a check of operating voltages - any missing? Then I would check the output pins of any IC for unwanted DC.
I would use all the various jacks, inputs, outputs to see if we can determine which parts of the system still work, and which do not.
Inside I would start with a check of operating voltages - any missing? Then I would check the output pins of any IC for unwanted DC.
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