Help!Subwoofer amp (class d)

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hello everyone
i have just find my Earthquake 12" Subwoofer stop working , and i sure that the power supply parts is workable .
Once i give the signal to the amp , no sound comes out....And i find it was a class D AMP and some IC's word on surface was already removed....
So....please help me and sorry for my poor grammer

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.