Audio Systems: Repairing a Kicker XS50 amp, wet fart, class d amplifier

Question
Well its a class d amplifier. This wasnt JUST installed either, it was fine for a while. Yes i have the correct size wires (0/1 gauge for power and ground) im not sure exactly what to look for when looking for these DC to DC converters. If you explain maybe what it looks like i can test it and use an ohm meter. It does it at any volume, it doesnt sound AT all good no matter how how or low it is, you do have to turn it up a tad to get that noise (crap noise). One thing to note is that the ground and power wire had touched from the looks of it due to it being black right around the two inputs (it only takes 8gauge wire, but 0/1 is going to it). Nothing looks burnt up or smells like it is burnt up, only where the ground and power wire connects to (the wires coming from those inside the amp are not crispy, they bend fine and dont seem like they are friend inside. Hopefully this might be of some more help.
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Followup To
Question -
hello, i have a Kicker XS50 amp, the original old school one. (Actually i have two of these) i know for sure that one is fried. But this second one everything looks fine when opened. But when power is on and volume is turned up on radio, it basically makes the subs sound like a wet fart. very crackly and sounds HORRIBLE. Red light comes on (that means it has power) but it just sounds like crap. Not sure what to do or where to look in this amp to repair it but i do have quiet a few parts left on the other amp i am able to use. Thanks for your time hope understand it.
Answer -
Andrew,
Its possible that one or more of the power switch transistors in the DC to DC convertor section are faulty. If you have just installed this amp in your vehicle, do you have to correct size power feed wires? To find out where the problem is in the amp you will need a volt meter and measure voltages with the amp on and with sound driving the unit. As you turn up the volume, the output voltage from the power supply should remain the same voltage, if not look for shorted transistor/s

TOM,
T&D ELECTRONICS

Answer
Andrew,
The DC to DC convertor circuit consist of a large flat coil and several transistors plus drive circuits. This circuit will take the 12 volt input and step the voltage up to about 30-50 volts DC, both positive and negative outputs to power the audio output transistors. If one or more convertor transistors are faulty the output voltages will be lower or not equal. With unequal output voltages the amp will not sound correct. With experience and by using a volt meter you should be able to locate the faulty components. If you still have problems please contact me direct for more info.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net