Memphis Audio PR1X1000 CLASS D MONOBLOCK AMP PROTECT LIGHT WON'T GO AWAY!

So I have this Memphis car Audio PR 1 × 1000 class D monoblock amplifier that I got from a buddy of mine and as soon as I turn the amp on, the protect light turns on. But after checking on my wires making sure that they were connected correctly the weirdest thing happened, when I would reconnecting the blue remote turn on wire to the amplifier, the light is blue for a few seconds then turns red as soon as I tighten down The wire... So I pop the top cover off the amplifier to further inspect it, and noticed there's these metal plates with three prawns that are rusted/ burned up. What are these connections and is it repairable?
 

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That's an FET used for an output transistor.

The board may be damaged but you can generally cut away 100% of the carbonized material and salvage it.

The driver IC may have been damaged.

I'd remove it (can cut the legs away at the board) and check the rest of the output FETs.

Don't power it up again without having a 15 amp fuse inline and all FETs tightly clamped to the heatsink. Even with that, you should probably wait until you have checked the FETs and replied here for further instructions.