So we were reinstalling a 2310 today after a minor remodel. I had it working and started to tweek the remote, etc. and the sound seemed to start cutting out. Then it just stopped but video is still passing to Samsung Plasma.
I can't get audio from anything Directv, Apple TV or Sonos. They all worked initially.
So looked in the Denon menu and nothing seemed "out of place". Then did a microprocessor reset. Nothing changed. I went into the Denon menu and changed the HDMI audio to pass to TV not AMP, and audio works on Sammy with both DTV & ATV. I checked the Sonos Connect and its outputting audio fine, into CD analog input but nothing from CD input on AVR.
It didn't go into any type of protect mode but I checked the speakers with an ohm meter and got 6.5 on l,c,r and 9.3 on rears.
I have no clue as to what is wrong other than a bad avr? I didn't try an optical or coax input from the DTV or ATV since I get nothing from the CD input it seems it's the AVR.
Any ideas???

Equipment:
Denon 2310Ci
Directv DVR (model unknown) connected via HDMI (on cbl/sat input)
Apple TV connected via HDMI (on HDP input)
Samsung Plasma #PN58B860 (on HDMI 1)
Sonos Connect (CD analog input)

Blow in the headphone jack really hard.

Really? I don't know if you're pulling my leg or not. I'm going to give it a try tomorrow.

Give it a yesterday, too.

The forever backup tests for a dead receiver are

1. put a known working line level signal into it. See if you get any audio out anywhere.

2. if it has a tuner, switch to the FM tuner (for AM you'd have to hang a wire on the antenna post[s]). Find the mode switches and set them so you'll get interstation noise. This tests the selector switch and power amps.

Checking the line outs under both scenarios also can tell you something. Rarely but truly, sometimes stuff just quits.

Yes, really. You could suck on it or put a pen into it, but you could damage the switch.

Also, like Ernie said, try internal input, be it Tuner, streaming service, etc.

The headphone jack is a problem on these older Denons are an issue. They get dirty/corroded. Usually if you run a 1/4" headphone plug in and out a few times it gets it working.

Now you have to blow Denon products in order to get them to work?


That's just going way too far.....

Hopefully ya'll have some knee pads in the truck.

KOT

Well, had to "blow" the Denon to get it to work......
Blew it out and speakers started working. Thanks for the info, I never would have tried it.
Thanks so much for you guys here on R.C. !!!

No. I've been handling Denon for close to 20 years. There was a couple of years where dust builds up in the headphone jack and shorts to ground so the AVR thinks phones a plugged in. Blowing it out fixes it.

You can try all that other stuff but I deal with that problem a couple times a year with dealers who are lost without Matt Good.