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Re: denon 1601 avr
The unit is in protect mode. It has detected a problem in the final output stage and has shut down to prevent further damage. Disconnect the speakers completely and try turning it on. If you still get the same symptom, the problem is inside the unit and repair is required. Usually when this occurs, the output transistors have failed. There will be at least 2 that need to be replaced. Figure on parts costing around $15-$25. Add in the local labor rate for the complete repair cost.
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It went into what is called the protection mode,Did you have it cranked up loud when it happened,? Check if any of your speaker wires come off some how end are crossing . Or there could of been a power suge that will also cause it to go into the protect mode, End fried internal parts on it.If it is a internal problem. The repairs will be verry expensive if it can be (Repaired) A lot of times it is cheaper just to go end buy a different one.
Try disconnecting the speakers at the receiver. turn it on radio or any other source and turn up the volume. If the receiver still shuts of, there is an internal capacitor issue and needs serviced. More than likely though, it's a speaker problem. If the speakers were underpowered and at max volume, chances are the damage was to a voice coil in one of the speakers. If the receiver continues to stay on without being connected it's ok. check your speaker wires as well. Frequently loose braids on wires touch each other and create very little resistance until turned up, more volume, more resistance. Then the receiver puts itself into protection mode so no damage will occur. If you need further help, post a comment and I can help you troubleshoot further.
Disconnect ALL of the speaker wires from the back. Turn it on again, if it still trips, then the unit needs to be repaired. If it does not trip with no speaker wires connected, turn it back off, connect 1 speaker at a time and turn it on, when it does trip, that speaker that you just put on has a short somewhere, it could the be the wire or in the speaker.
More than likely audio o/p problem.could be speaker problem,dissconnect speakers and try to power on if still no go it is job for technician.If it works one of your speakers has a short on it,good luck