Maybe try a reboot.
To reboot, turn receiver off by the small on/off button, not the big standby button. While off press the night and pure direct button at the same time and keep holding them with your right hand while pressing the small on/off button with your left. You will see your receiver menu flash. When you see it flash let go of the night and pure direct button and the receiver will reset it self to the radio station 87.50. The receiver's microprocessor has now been set back to factory. Enjoy this info is straight from Denon's Tech support. I had to do this on mine
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Does you television have an "Optical Audio Output"? This would be the best and easiest way to get surround sound from your system. If your TV has an optical output the you can use an Optical Cable to connect the TV to the reciver. This way whatever you are watching from the TV will be in surround sound. The HDMI connection sends a surround sound signal from each device to the television. If you connect it to this output on the TV then make sure the optical output is turned on in you telivison's menu. If your TV does not have an Optical Audio Output then you will need to connect each optical output from the blu-ray and HDbox to your reciever. Your reciever will need to have two Input channels(one for each device). Then you can select that input to the device(blu-ray or HDbox) that you are using. The optical cable is the best way to go for surround sound because it is pure digital and produces the best sound. If the HDbox or Blu-Ray does not have an optical output then you will need the six rca jacks to get the surround sound. Let me know further info on what you have so I can assist you more.
I had this problem too. Finally, after using the MCACC setup and making sure all the speakers worked, I found I had to set the source to FM, TV or whatever from the remote control and set the mode to advanced surround sound using the front panal button on the upper right. Had to fool with them a lot. Good luck.
The dvd player is responsible for reading the surround sound track, and sending it to the receiver. First make sure you are playing the surround sound track on the dvd, many have a stereo track too. Next, try another dvd and see if you can play surround sound on that one. If you can't play surround on ANY dvd I would start looking at the audio connection from dvd to receiver. Are you using an optical cable? Red, white, and yellow RCA cables? Optical will transmit any sound over only one cable, RCA cables need one cable for each channel (LF, C, RF, LR, RR, sub.) If your connections are correct, is the receiver set to play a surround sound track? Is it set in 2 channel mode?
the problem you have seems to be on programing the master effects to get to it go to main menu and see the distribution and effects you want to hear on you home theather.remember that home surround needs some decoders to send the sound where the images come and its right built in....
I dont know your reciver but if it has a hdmi input plug ps3 into it and set audio on ps3 to pcm,this will give you digital surround eg multichannel,if not you must use a optical cable from ps3 to reciver and set ps3 audio to digital.
hope this helps.
Best thing to do is to put the unit in 5 channel or 7 channel mode. That will send left ch information to the front left and rear left speakers ( both will get the same information). Ditto with the right channel. The center channel will get centre channel information.
If all the speakers work, go out and rent TOP GUN. ( yes its old), BUT there are a few extreme scenes , one of which is the elevator scene, where the camera changes perspective and suddenly you hear the elevator doors close BEHIND you through only the surround speakers ( have the unit in surround mode....NOT 5 or 7 ch mode ). If this works ok, then you have no problems.
Remember, surround sound only produces information in the rear channels when the information is there. To check out the digital and DTS decoders, get an action flick. If you can, get a remote too, because that will unlock many features about the receiver that you cant get to with the front panel controls. Also go to yamaha and download the owners manual ( its free !!).....that should get you going.....
If all others had been fine before this problem arose, and you are sure that you haven't changed anything in your amplifier's channel selection menus, the problem might be deeper to solve! Try these out;
1-If the amplifier has a test menu to check out all channels plugged in, activate it. You must be able to get sound, which is like rustle, from each speaker.
2- Check your plugs, cables etc. be sure that there isn't any short circuit
3- Grab your amplifier's remote control and find the "channel selection menu" that allows you to increase and decrease volume levels for each speaker independently.
So your saying that you have no rear channel. Some recivers use a single stereo output ic for both sides on the rear speakers. you could have a defect with this IC . Anther thing Im sure you check3ed the obvious ie : the switch is on suround sound? If there is a front to rear fader is it in the middle? Good Luck