QSC MX1500A 2-Channel Amplifier Logo

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Posted on Dec 17, 2009
Answered by a Fixya Expert

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How to fix my power amp qsc mx700 wen i turn on the heatsink is hot even i did not conect the speaker pls. help asap

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Power Electronics

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  • Expert 243 Answers
  • Posted on Nov 08, 2013
Power Electronics
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If the amp sounds, then you should lower the bias idle current.

  • joseph carmelotes Dec 03, 2013

    mr paul...pls teach me on how to set the idle current

×

1 Related Answer

Grubhead

Grubhead

  • 5755 Answers
  • Posted on Dec 20, 2009

SOURCE: hi wat is useualy parts defect wen i turn on my

The answer is quiet simple! The parts on the heatsink that get really hottest!

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sounds like an internal problem. first disconnect all spks from amp, then switch on head unit and check if amp turns on (LED ON?) then feel the heatsink, if heatsink gets terribly hot then amp has internal fault. if amp doesnt get hot then try connecting a single working speaker to each channel separately, it may occur that one channel is faulty only. amps can shut down if the speaker/s is faulty as well, check all speakers and spk wires for shorts before taking amp in for repair. cheers
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