The sound on my Samsung HT-X30 just went off. No test tone, if I turn the sound up to max, 48, I can just hear something in the RH front speaker.
I have full circuit diagrams downloaded and I have opened the case (seven years old now) and located the AMP board which I suspect is where the fault might lie.
Where is the "test signal" injected?
Where can I buy a replacement board?
Are there any checks I can do on the board to try to narrow down the fault and ascertain that it is in fact where the fault is?

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