Zenith C32V46 32-Inch 4:3 HDTV-Ready TV
A great TV except for the occasional, horrendous buzzing noise
I have had this TV for about three years.  Overall it works fine, however it does make some high-pitched buzzing static noises which I find unbearable.  I saw on some of the other posts that changing the cables might have an effect.  I tried this and in the process, I noticed that just applying pressure on certain places on the back of the TV enables me to reduce the static noise.  I noticed two screws on the back of the TV just above the AV connector panel.  I loosened each 1/4 turn and then fully tightened each one.  The buzzing noise went away.  I hope it stays away.  If it comes back, I will try this process again and maybe move this heavy beast and search out other screws.  This appears to be related to weakened RF grounding that gets improved by loosening and retightening the screws.