Older kicker kx1200.1 Powers on but doesn't get loud with pictures

Like I said I have a kicker KX 1200.1 I just purchased to strap to my other kicker 1200.1. I tried bench testing it before installing it in the car and it does power up with no protection light coming on but it has very low output. On taking the heat sink top cover off the amplifier I found this. Would this cause that problem?
 

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