Left rear surround channel making cracking noise, isolated the problem to Yamaha receiver , any ideas where i should look in the receiver to fix the problem Thanks -Jagan
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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