I'm experiencing a weird issue that might be related to the audio mute problem we're all having. It has to do with the headphone jack.
Sometimes - not always - when I plug my headphone when the receiver is showing the typical "no signal" sign - I get very low volume on my headphones.. and I mean really low.
Every single time, a simple fix works : I can simply let the music/video play, unplug the headphones then I hear the clicking noise of the amp kicking in then the sound coming out of the speakers. I plug the headphones back and everything is fine.
I've tried to find reproducible steps (I know how bug reporting works, I'm in IT :P ) but it seems to be on & off. I've found the following :
1-Happens on HDMI source as well as on optical digital sources. I never tested the analog inputs.
2-Sound format does not seems to matter : DD5.1 or PCM2.0, etc
3-It tends to happen when the amp has been on for quite some time (15-20min) without playing anything. It nevers happened when I just turned it on.
Typical problem scenario :
1-Watching TV or a movie for 45min-1h using speakers
2-Wife wants to go to bed... put my media center on pause --> amp shuts down audio decoding after around 3/4 of a second and shows "No Signal"
3-I let it stay there for a couple of minutes while I do other stuff
4-I get back to listen but with the headphones...
5-Plug the headphones in while no-signal is still being displayed on the screen
6-Screen shows "Headphone" and I can hear the amp's relay clicking to off..
7-Hit the play button -> typical 1-2second lag followed by super low volume
8-Unplug the headphones, plug the headphones back and it's fine.
And btw, it's not related to the jack itself. Instead of doing #8, I can also power cycle the receiver and it fixes the problem without touching any physical connections.
First I thought my headphones we're having problems (Sennheiser RS160 wireless) but the same problems also occurs with a pair of wired headphones.
The reason I think this is related is that I've NEVER had any problems if I plugged the headphones WHILE something was playing. It seems the audio decoder or dac or whatever audio circuitry is going to sleep and wreaking havoc with the headphone jack/amp