Denon AVR 2870 works fine viewing television for up to five hours then experience a loud pop in speakers and loss of audio and video.

SOURCE: Denon AVR-3802

I have repaired many of these Denon receivers over the last few years.

Since the headphones work, that means if you dis-connect the speakers it will turn on and not go into protect (when power cuts off a few seconds after turning the unit on).

The most likely problem is a bad speaker. to find out which speaker is causing the problem, do this.

Start out with just one speaker connected and then turn on the unit. If it turns on and plays music, you know that speaker is good.
Now turn the unit off again and add another speaker and keep the first speaker connected. Once again, if the unit plays, that speaker is also good.

Keep doing this same procedure one speaker at a time. As soon as you connect a speaker and then try to turn on the unit and it goes into protect, the speaker you just connected is bad.

To confirm that this speaker is the bad speaker, dis-connect all speakers and only plug the suspected bad speaker into a speaker jack that worked with one of the other speakers.
If the unit still goes into protect you know then that you have found the bad speaker.

If the unit still goes into protect, that speaker is bad and you will need to take it in for repair or replace it.
make sure you use 8 ohm speakers. if i remember correctly these Denons can use 6 ohm speakers, but those are harder to find and most home speakers are 8 ohms.

If the unit does not go into protect and that suspected bad speaker plays in one of the other speaker jacks, what you really have is a bad channel in the amplifier, the channel that the suspected bad speaker was previously connected to.

If you find out you have a bad channel, you will need to take it in to an repair center. Preferably an authorized Denon service center. There are not very many of those around. I work at the only authorized Denon service center in the entire state of Michigan.

If I can be of more assistance, don't hesitate to ask. And a good rating is always appreciated. :)

SOURCE: Denon AVR 2106 clicking noise

I like when a user is observant and curious. That will help immensely in resolving this problem.

What source(s) are always involved with the problem?

You imply it is observable with output video to the TV - "only when there is movement on my tv screen and it stops in still screen". That sounds like a digital pathway problem of some sort as any data errors would eventually escalate to something audible or visible to you once the hardware and correction algorhythms are exhausted. The clicking inside the receiver could be its efforts to resynchronize with a bad data stream. Hence, I'd like you to isolate the ins and outs that fail all the time and find the probable single source of the problem.

Try this: put a digital source on and select/deselect it for listening or viewing. Does it make the click in that brief time it's 'thinking' before you hear the source? That would be the 'normal' sound. My Pioneer does it once per source switch. Repeated clicking would mean it's struggling.

I'm betting you have an optical or hdmi cable that's flaky or not in tight and straight. Or, if only one extternal source is involved we follow that back.

Frank Fulton

• 1114 Answers
• Posted on Sep 21, 2009

SOURCE: Denon AVR-3806 keeps losing video signal.

If your using HDMI, pull it from the receiver and run directly to the TV, then run optical or digital coaxial to your receiver. It's referred to in the industry as a "Handshake" issue. It has to do with firmware and hardware of your receiver and continuous ridiculous updates from the recording industry to protect copyright. Hope this helps. If you still have issues, post a comment and I will help you troubleshoot further.

Testimonial: "Thank you for the info. It was very quick and helpful."

SOURCE: No audio running TV through Denon AVR 1910

I had the same problem. You're not doing anything wrong. the thing is you can't (I don't know why but the owner manual says it) have sound going to your tv AND your HT speakers when you're using HDMI. You should try going to input setup, choose hdmi audio out to your TV instead of the speakers, and then run an optical cable from your satellite to your receiver, assigning it to the TV/Cable input.

SOURCE: While watching tv my speakers started cracking and

I had the same issue..I called Denon support and they fixed the problem. You need to reboot the micro-processor....turn off the unit...hold down A+B then turn on...the display blinks (all the display is illuminated) Let go of the buttons.....issue resolved!

Good luck....