It is possible that the error protection is ON and so does not switch on the amplifier to the speaker. Only if the error amplifier which is a current sensing circuit gets a good feedback on normal current drain will the processor be informed for the speaker relay to be switch. So remove speakers and check, if not the output is faulty. check for short or drain in at least one channel.
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It is possible that the error protection is ON and so does not switch on the amplifier to the speaker. Only if the error amplifier which is a current sensing circuit gets a good feedback on normal current drain will the processor be informed for the speaker relay to be switch.
So remove speakers and check, if not the output is faulty. check for short or drain in at least one channel.