Pioneer Surround Sound AV Receivers

try holding "advanced surround" and power buttons - it might be in protect mode.

Try changing surround modes. You might be in 5 channel stereo mode.

That would follow. Assuming the PC's unspecified sound card (output) is set up to export the digital bitstream that the Pioneer can accept. Read some manuals.

UNdefine the surround back speakers and it will be 5.1.

Sound quality issues can be anything but speakers are THE main contributors to it. Insufficient information given to evaluate what the problem is.

http://www.retrevo.com/support/Pioneer-VSX-D411-Receivers-manual/id/385ci976/t/2/

I believe it's trying to tell you something is wrong with its digital sound processing.

This was the best source I could find on it:
http://www.avforums.com/forums/av-amplifiers-receivers/381823-problem-pio-vsx811s-no-sound-display-says-dsp-ng.html


If you switch it to satereo / direct and the light goes out I'd say that would clinch it.

Test with an surround sound media ie. Blu-ray or DVD)_. Disconnect the front and all other speakers that are working to see if sound from the missing speakers are heard. If this doesn't work then start by tracing and checking all the wires from the receiver to the speakers for bad/shorted/open connections.

PLEASE VOTE IF THIS WAS HELPFUL. THANKS & GOOD LUCK.

If it's under warranty..get a new one.
It's an internal breakdown ...tech service only.

Take it back this receiver is out dated by at least 5 years (mine is over 5 years old) Purchase a newer one......

go through your mode channels to put it on surround sound

silly Question John?? Have you or anybody changed modes on the reciver??? Not so silly as i've seem even a power do that. if not in the system then try unplugging for 24 hours and starting over again . let us know as maybe we can come up with more as we get more info. Good Luck