Question about Pioneer Car Amplifier GM-5100T - 2CH 760 Watts Car Audio Amplifier

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Shutdown when i turn the amp on it works for about 5 minuets and then it cuts in and out for a while and then it stops altogether

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There is either a thermal problem in the amp itself (a bad part) causing it to shut down after a while, or the amp is overheating due to a load problem. This may be due to wiring issues or a bad speaker. Try running the amp into a set of test speakers connected directly to the outputs with all the other speaker wiring disconnected. If the amp still shuts down you'll know the problem is in the amp itself. If it runs OK, you'll have isolated the trouble to the wiring or speakers and can test that portion.

Posted on Dec 10, 2008

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My amp wont turn on


The reason it used to cut-off at 60% volume as you said before,
Is probably due to the "protection circuit mode" being tripped.

You can try resetting it by turning off your CD player ,removing the Batt( + ) and Gnd ( - ) terminals from the amp for a short period. Reconnect them Allow the amp to receive power but not switch on (keep cd player/remote power source off)

If you dont know how to wire the CD player to control the amps power status , the easiest way is to connect the 'power antenna' or similar low voltage throughput wire from the head-unit to the amp's Remote terminal.

My old amp did the same thing ,and would need to be powered off/on before resuming sound output, sometimes I had lots of trouble with the protect mode staying on , even with little or no sound output from headunit.

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