Denon AVR-4802R automatically shuts off in multi-zone mode
When operating in multi-zone mode (after amplifier was off for couple of hours), the amplifiers shuts off automatically. At this point only Standby light is blinking and the amplifier responds to only OFF command.
After turning it off, the main zone can be back alive and operates fine, but the moment multi-zone is turned off, the amplifier shuts off again with same symptoms.
After turning it off, if it the mult-zone is turned on instead of main zone, the amplifier shuts off instantaneously. So basically turning muli-zone turns off the amplifier.
Leaving the multi-zone off for some time with just main zone operating, turning multi-zone agains for a while and then the system shuts off again.
So it seems like the amplifier is heating up and decides to shut down. But touching the body of the amplifier, it does not seem to be very hot.
Re: Denon AVR-4802R automatically shuts off in multi-zone...
I had the volume of the multi-zone tuned too high and was attenuating it in an external control box. Once i took the multi-zone volume down to -25db, the problem went way. My main zone was operating around -35db so did not have the problem.
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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.
zone 2 volume can be adjusted by zone2 remote control (small one which came with the unit) or by main remote control if you switch it to zone2 mode. My main rem control has a slide switch i have to put in zone 2 position to operate zone 2 amp.
Check your speaker wires on zone 2 and look inthe manual for speaker configurations with zone 2. you may have a speaker conflict. If you still have an issue, post a comment with your speaker setup and I'll help some more. Hope this helps
Turn off zone 2 then turn your receiver on the main zone on Radio, tune in a station and check for audio. Post a comment and let me know if audio works that way. If you don't have any audio, list your other equipment makes and models as well as how they are interconnected to your receiver (cable type) and I will help you troubleshoot
time to reset the microprocessor. See page 87 in manual.
1) switch off the unit using the main unit's power operation (small power button)
2) hold the PURE DIRECT button and DIRECT button at same time and turn the main unit's power operation on.
3) wait for entire display to flash in 1 second intervals
now the speakers need to be set up again but zone 2 will be working. i suspect a power surge causes the microprocesser to be corrupted. i put a power surge protector and have not had problems (lately).
It sounds like you have a bad speaker on the zone 2, or you have the speakers connected improperly.
When you engage the zone 2 a relay clicks and the speakers then become part of the amplifiers circuit.
If the problem was in the amplifier, it would go into protect mode without even having speakers connected to it.
If the speakers all check good, you most likely have the wrong type of speakers, meaning the impeadance is too low, or you have too many speakers connected to it.
On the back of the Denon, you will see right around the speaker output jacks, what ratings the speakers should be. If I remember correctly, it says 6 ohms or more when using only "A" or "B", and it says 12ohms or more for "A" + "B".
If you have two 8 ohm speakers on the same speaker jack you now have a 4 ohm load. That is below the ratings and can cause the amp to shut down (go into protect). Since your amp shuts down right away, I think you have a bad speaker or way too many speakers connected.
I have seen many times when people will connect 2 or 4 speakers to the one of the outputs that are designed for only 1 speakers.
If you are using too many speakers you will need a speaker distribution box. It has a resistor network built into it so the amp never sees a lower impeadance than what it is designed for. You can connect 4, 6 or 8 speakers to one set of outputs designed for 2 speakers. You do loose a lot of power to the speakers, but it is better than blowing up your amplifier.