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Re: Left -Surround channel
If you know anything about testing IC's and transistors, you should not have a problem repairing this amp. I can tell you to look in the output section of the amp, and theres several things in there that can cause this. No boards to replace, only componets soldered into place. The correct way to trouble shoot this reciver would be to hook up some load resistors to where the speakers go. Then insert a 400 to 1000 hz signal at .775mv, then hook up a scope on the amp output or in differant stages to see where its clipping or breaking down. You may also be able to use a componet cooler or heater to make certain parts act up if they are intermittant. Remember though, if you have no training in electronics, your much better off taking the receiver to an expert repair depot or buying a new one, because you can't look at it and say theres the bad part unless its cooked.
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The signal that comes from most tv's via the optical output is a stereo signal only. That is what your receiver is reading. You would have to manually set your receiver to decode the signal into surround,.
There are a few things required for the rear surround channels to operate;
1. The surround back channels must be enabled in the surround setup menu.
2. The media being played through the receiver must have audio encoded for the rear surround channels. There are only a few exceptions to this but I'll exclude the explanation for simplicity.
3. The audio level of the speaker channels must be set high enough to be audible.
Enter the surround setup menu with your remote. Use the center button on the remote to toggle through the selections, press down on it to enter the selection. You will navigate to a selection in the surround setup menu that says "surround back" or S/B with a selectable yes or no indication. Press on the center button to enable them.
Media like DVD or Blu-ray that has 6.1 or 7.1 channel audio has separate, or often referred to as "discrete" or "matrixed" audio intended for playback through surround rear speakers, depending on the music or movie. If your media is encoded for 5.1, then there will be no audio sent to these speakers. However, with the different modes of on-board digital processing of this receiver you can still have audio through these speakers.
Last but not least is the actual playing level of these rear surround channels. They may simply be adjusted to quietly. Enter the setup menu with remote, choose "level" and navigate to the rear surround channels. You can adjust the level up or down in 1/2 dB level increments by toggling left or right with the center button. Each surround channel can and should be adjusted independently and equally.
configure ur PC (both OS audio and third party sound driver) for surround sounds. control panel- sounds and audio devices - speaker settings - advanced - speker settings. so this done. make sure u select the 6 input channel - the button is on the right edge near the volume knob. near the vol button there are two buttons for selecting input type with up down arrow. from that u can select the input type this will be indicated on the top front indicator. but with the 6 input channel selected all selections are preceeded. if u select stereo mode u will have left/ right audio only. make sure u connect the input right. connect from computer to 6 channel input. main, surround, center and sub-woofer. connect the spekers to main (L/R), rear(surround) (L/R), center and sub woofer to terminal marked sub woofer ouput. this done select like i said before the 6 channel button. that should do it.
What do you have in the "multi channel input" jacks on the rear of the receiver? Those inputs Right, Left, Center, Surround R+L, and Sub are used when selecting 6 channel mode. They bypass the receivers surround processor board.
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.....
After using the method of last resort (RTFM) I discovered that Yamaha 7.1 amps assign an order of priority to the speakers. The surround speakers have higher priority than the surround-back speakers. I had connected the rear speakers (in a 5.1 configuration) to the surround-back speaker terminals and since nothing was connected to the surround terminals the E-6 error happed on auto-setup.
I eventually fixed this by connecting the rear speakers to the Surround L/R terminals and then, via the manual setup menu, set rear surround = NONE. This causes the amp to route the rear-surround signals to the Surround L/R terminals. The auto-configure then completed successfully.
Why would you only hook up one speaker for the rear channel? in 7 channel stereo, all speakers have 100% signal sent to them as "stereo" in Dolby digital, rear speakers are for "effects" not dialog. like a plane flying past you or a car driving by, that's when you hear a rear speaker. It also needs to be placed behind you, not next to you or in front of you. Unless you are using zone 2 & 3 the receiver's surround back will work. if you only have left,right,center,sub & rear; the rear speakers should go to surround speakers not surround back. If you still have questions, post a comment and I can explain further. Hope this helps