Denon AV Receiver Model AVR3600 locked at'' Protection '' mode

https://audiokarma.org/forums/index.php?threads/denon-dra-435r-protection-mode-factory-reset.932470/

https://www.google.com/search?q=denon+435r+protection+mode+reset

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I don't have this particular model but I have owned 2 Denon receivers and I suspect yours is similar. On my Denon there is a manual speaker set up with a test tone for each channel. This will allow you to boost or reduce the DB level of each speaker individually. I would do this while sitting where you do while watching TV. be sure:

1. The receiver is in surround sound mode to do this.
2. My receiver also came with a microphone that can be plugged into the receiver to allow automatic level set up through what Denon calls the "Audyssey" set up. The equalizer setting are also located in the "Audyssey" settings.


You might check your manual before you begin.

Change the hdmi cable and try. If not then you have an hdmi fault module.

Sub will only work in surround mode, not stereo mode. Also source must have sub component (5.1, 7.1, 9.1 etc) If your system was transmitting sub signal before, be sure you have chosen a mode which includes a sub signal.

Hi There, may I asking you about the remote series for Denon udra-F05 remote, thanks a lot Bro

Your receiver is bad. Normally the receiver will not say protection without speakers.

If your receiver goes in to the protect mode or shuts off you have shorted output transistors

The reciever will go into protection mode when there is a short in the speaker wires or the amplifier was overloaded. What I would do first is verify that none of the speaker wire connections are loose at the back of the reciever or at each speaker. And verify that none of the wires are making contact with each other. Then label each speaker wire as you remove them from the reciever so you can re-install them correctly. After you have disconnected the speaker wires try unplugging the reciever for 10 to 15 minutes. Most recievers have a self-resetting overload protection switch and this should reset it back to normal. Now try plugging the reciever back in and turn it on without the speaker wires connected. It should be out of protection mode now. If it is still in protection mode verify that there is not a reset switch somewhere on the back of the reciever. If it is not in protection mode now then proceed to connect one speaker set at a time and turn on the reciever to see if it goes into protection mode. If it goes into that mode after connecting a speaker then that speaker is the cause of the problem. If it does not go into the mode after all speakers are connected then try turning the volume up. If it goes into protection mode then there could be an internal short on the amplifier or a incorrect OHM rated speakers connected to reciever. Verify that the speakers are rated the correct OHMS.

Do you still have the AVR1500? I have one with a bad tuner--and would be interested in purchasing your for parts. Let me know if you still have it and if you'd be willing to sell it.

Maybe the audio amplifier IC´s are damaged that´s why go on the protection mode