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How to fix Crunch amp in protect mode - Crunch Powerzone P2200 Car Audio Amplifier

Posted by Anonymous on

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Posted on Jan 02, 2017

jdvillanueva
  • 2098 Answers

SOURCE: crunch 1500 went into protect

Hi ,
"Protect"
is an error code for short and overload. Once the power applied to the unit and shorts sensed by the processor, the unit will automatically turned to "protect" to avoid further damaged to other parts. Most shorts is in the supply voltage (B+, Vcc) line and most common caused is the sound output IC (mounted in heat sink). This part is responsible for amplifying the audio from the pre-amplifier stage and will feed to your speakers.

If you have a knowledge in disoldering and soldering technique, I would advice you to pull-out this part and then try the unit. If the "Amp Grd" error code is gone then you must replaced this IC with a new one to back your unit in normal operation again.
Before that, try to isolate first the speakers, if you have a shorted one, same symptoms will be encounter. Disconnect all the speakers from the unit and turned it on naked. If the symptoms is gone, then check for shorted speakers.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.


Posted on Jun 15, 2011

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Hi ,
"Protect"
is an error code for short and overload. Once the power applied to the unit and shorts sensed by the processor, the unit will automatically turned to "protect" to avoid further damaged to other parts. Most shorts is in the supply voltage (B+, Vcc) line and most common caused is the sound output IC (mounted in heat sink). This part is responsible for amplifying the audio from the pre-amplifier stage and will feed to your speakers.

If you have a knowledge in disoldering and soldering technique, I would advice you to pull-out this part and then try the unit. If the "Amp Grd" error code is gone then you must replaced this IC with a new one to back your unit in normal operation again.
Before that, try to isolate first the speakers, if you have a shorted one, same symptoms will be encounter. Disconnect all the speakers from the unit and turned it on naked. If the symptoms is gone, then check for shorted speakers.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.


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