Scratching sound in speaker conected to left channel

Getting the connections right is a problem. One thing I find helps is the THX DVD discs that certain movies have on them. They have a sound set up to get it right. It makes a tone for each channel so you can hear which channel is working. It should help you set up the system right and determine if any channel has a fault on it.

Well let me first ask is the center chanel working? or properly hooked up. Cause most of the times when in 5.1 the talking or "dialog" as you put it comes only through the center channel its just kinda how they do it. Listen to see if the center channel is working. if you are unsure try hooking up a speaker that you know works into the center channel speaker output. If no sound comes out then the reciever possible has blown its center channel. Please follow up with a comment and i will be glad to assist you further thanks, Midwes-tek

Check your speaker connections it sounds like you have a 5.1 or higher sound system. 5.1 means left front speaker, right front speaker, center speaker, right rear speaker, left rear speaker and subwoofer.

Voices in movies all get channeled to the center speaker (you can usually hear it a bit from the right and left front speakers as well). If your center speaker is disconnected or not working, you will only hear the background sounds.

faulty op amps, needs to be repaired

A number of things....faulty speaker (you can scratch test this with a torch 1.5 volt cell....cell pos goes to 1 speaker terminal
and cel neg goes to other speaker terminal..you can conect it any way around with flying leads from the cell...just keep touching the terminal with one flying lead...you will hear a scratching sound in the speaker) have your mike checked...test the tx/rx relay on the circuit board for tx/rx switching, or, a failed
driver transister in the output stage....the list is many
Cheers [email protected]

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.....

best of luck...
Rob

Its easy. Jus from task bar click on that Speaker Icon of sound. In that you can select the left channel, right channel or both! Keep the pointer in middle and you will get sound in both the channels! Enjoy

i think it would probably be somthing inside the channel???

all of the channel are resonding to the test. but you cant notice it bec 5.1 speakers, each channel are designed to respond to a certain frequecies.  the L/R channel your talking about have the mid-range frequecies so it responds clearly compared to other channels...

 

hope that helps...

I think you mean the left channel is out but when you use test tone, the sound comes from left and right channels through the right channel speaker. If this is case, the switching IC is malfuncting. Unit needs service