Question about MTX Thunder 421D Car Audio Amplifier

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Help! Amp not turning on

I've had this amp for a little while now and it has been working great. I had a mtx thunder 8000 sub hooked up to it and one day the dust cap started pealing off. I am not an expert on amps or subs, so I did not think it was neccessary to un hook the power wire from the battery before removing the sub. Basically, since it is a dual voice coil sub, I think the amp may have shorted out when I removed the sub. I think it may have been because the speaker wires touched one another. So then I replaced the fuse, and it started smoking, and still won't turn on.

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Im sorry to have to inform you my friend, if you saw smoke, you burned one or more of the resistors or output devices inside the amp. Without a service manual, it will be a hard call on what exactly cooked. In alot of cases please forgive me for saying so, but the ampis not worth taking into a repair shop to be repaired, because of the high cost these days of labor. Its too bad there are no user replacable parts inside of these amps. Good Luck. Ps Please do not forget to rate this thread?

Posted on Oct 16, 2006

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Posted on Jan 02, 2017

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