Question about Kenwood KAC-9102D Car Audio Amplifier

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Amp overheating could the the problem be in the ground wire. the reason i say this is because about a minute or two later the amp comes back on.

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No, a ground would not make it overheat. Your overdriving the amp, so it goes into thermal shutdown, and when it cools off, it comes back on. You don't have enough ventilation for this amp or theres a idle bias circuit problem. If its a ventilation issue. you could add a small 12 volt muffin fan to the amp. If it's the idle current problem, its going to blow up the outputs device's soon, unless you have this checked out in the shop, under a set of load resistors and a scope.

Posted on Sep 02, 2006

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What u think
Hello jayPRICAN,

You do not say what kind of speakers you are running on the amp and that can affect how you troubleshoot the problem.

Most often, a wiring problem such as a faulty ground or short in the speaker wires will cause such a problem. Here are the most likely causes for the amp to go into protection.

1) When a speaker wire is shorted or grounded.
2) Overheated.
3) When a ground wire of the receiver/head unit or the amp itself is not properly grounded.
4) When the amp itself malfunctions and a DC is sent to the speaker output.

First check your power, ground and remote turn-on wires. Then disconnect the inputs and speaker wires. If the amp does not power up normally with all the other wires disconnected, the amp itself is defective. If it does power up with everything else disconnected, reconnect the wires one at a time to determine where the problem is located.

Hope this helps.

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I would try it without the slot for the additional amp. However, there is a chance that it is fried. When its powering up I would check the voltages with a multimeter to make sure everything there is in order.

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