Question about MTX Thunder 1501D Car Audio Amplifier

1 Answer

My led red light comes on but there is no sound

How do I fix this problem?

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  • Teet_21 Sep 23, 2008

    same thing happened to me the light comes on but no sound

    i was using this to power a mtx 9500 sub

    idk why its not giving out any sound

    i check all cables remote etc

    i also changed the audio cables

    should i jsut have it repaired?

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  • Master
  • 631 Answers

Have you confirmed that you have a good signal source and the speakers are in good working order?

If so, the amp has likely failed and will have to be repaired.

Let me know if you have any other questions.

Posted on Sep 16, 2008

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2 Answers

Mtx 1501d no sound


There are a number of things that can cause it to act as you described. Have you pulled the covers off of it yet to see if you can see any problems?

If you do, disconnect power from it and don't touch ANYTHING on the board when ANY of the 3 LEDs (2 are not visible from the outside) are lit.

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This is not a problem that a normal comsumer should try to repair themselves. It's time to take it to a pro. It sounds like you have blown out at least one of your output channels. If you are getting any red light at all then the good news is that the power supply section of the amp is probably still good. About half of all the electronics in your amp is for the power supply section. The other half is for the actual amplifiers of the amp. Good luck, I hope it's not too bad.

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