ICEpower 1000a

Good afternoon all from a rainy England (summer "eye roll" )

I have 2x icepower 1000a boards with the same issue.
The board powers up ok, however produces no audio. It does not trigger standby or trigger the protection shut down. It just sits there with the peotection circuit happy as Larry just producing no sound.

Is there a common issue on these boards that would produce the same symptoms? As I have 2x boards with the exact same issue.

Unfortunately I do not have an oscilloscope, I am very DIY. I do however have a multimeter and good basic knowledge of circuitry.
 

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