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Protect led light

I have a question. my green led light goes on when i turn the amp onbutas soon as my headunit sends the signal to the amp the red protectlightgoes on. i disconnected the rca's and the speaker wire and when iturnedthe car on it stood green the whole time. im having problemsthoughfinding a ground in my trunk. ive been hooking up systems since2001 andnever ran into this problem... any ideas?? italysfinest818@hotmail.com

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I plugged up my amp correctly any it stays in protect mode no blinking or anything. I checked my ground and power, it was fine. Then I checked my Remote wire it was fine. I then plugged up my sub and it didn't work. I waited the 10 seconds to see if the protect light will change and it didn't. Any advise.

Posted on Mar 26, 2011

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It appears that the amp is going into protect mode. To eliminate external causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Posted on Oct 11, 2008

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The protection light is on indicating a short or over- voltage problem. If you disconnect the speaker leads and the light goes off or green then the problem is a shorted speaker or wiring problem. If the light stays red the problem is inside the amp and it will need service and parts.

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Generally a "protect" mode would be triggered by a shorted output (speaker). I would suggest disconnection all of the speakers to see if the red light goes off.

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If the amp goes into protect mode, it's likely due to shorted output transistors. To eliminate other possible problems, read through the following page:

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If the protection LED lights only after the remote voltage is applied (head unit is switched on), the amplifier likely has shorted output transistors. If the protection LED remains lit without remote voltage applied, the amp may have other problems.

Does the protection LED light with no speaker wires connected to the amp and no RCAs plugged into the amp?

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Generally, the power light is green and the protect light is red. If the protect light is on there could be a short in the wiring or there could be an internal fault in the amp.

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down (goes into protection), the amp likely has blown output transistors.

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