I have an aiwa AV-D67 and sometimes while watching tv or a dvd, static will start coming out of the subwoofer, center and right channels, the static is relative to the volume (if you turn up the volume it gets louder). I can still here the movie/tv when this occurrs as well as the static. I have checked all of the wires and connections and they are fine. Its starting to do it more often and it is driving me nuts. Sometimes if I slap the receiver it seems to make it stop for a little bit (this may be purely coincidental) any help would be greatly appreciated.
I think it's a grounding problem. Actually, it's a necessity for all audio-video equipments to get grounded properly. If you don't have a ground connection in your AC plug, your receiver will collect more and more static electricity. As a matter of fact, it decreases the sound quality that you can get from your equipment. I think that the effect of your reaction (slapping the receiver) isn't coincidental. When you touch any metal surface on your receiver (even while slapping) you condact the static electricity to the ground. I've had a same sort of problem with my receiver. Especially when I connected my laptop computer to the receiver, I heard an annoying distorted sound from the speakers. I found out that it was ground loop, which occurs when the negative (common) signal of the source coincides with the one of the receiver's. As a solution, I grounded my amp, changed all wires with new and shielded ones, and purchased an AC filter. Then, I got rid of the noise. I have to say that the AC filter (Belkin Pure AV Surge Protector, it also includes an AC signal filter)benefited me the most.
Posted on May 03, 2007
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