I'm sorry to hear that you're having problems with your television.
If you're still under warranty, why not try calling the Samsung customer service center at 800-SAMSUNG for further troubleshooting and see if perhaps a technician could take a look at the cause of the noise you're experiencing?
So I recently bought a Samsung ln37c550, and everything works great except I have the loud buzzing problem like many other users on here. I have read two solutions for this. The Samsung website gives the following solution:
To determine the cause of the issue, press the SOURCE button on the remote control to change to a different source.
* If the rattling, buzzing, humming, or popping disappears after changing the source, then the problem is caused by the connected device or the cables. Disconnect the connecting cables from both the TV and the device, and then reconnect them. Ensure they are connected securely to the properly ports. If the problem persists, replace the cable or contact the device's manufacturer for further troubleshooting.
I have messed with the connection cable, but have had no success. It doesn't seem like that's the problem.
I've also seen for some of the Samsung plasma TV's that the internal buzz is due to some part (not sure which) vibrating on the inside of the back casing. The solution is to insert some felt tape or plastic/rubber washers on the piece of equipment that is buzzing to fix it.
My question is has anyone attempted to fix this on their own, and if so, how do I do it? I'm pretty sure I can remove the back pretty easily but once I do that, where do I go from there? The two main things I'm worried about are: 1) touching something that shouldn't be touched and being shocked, and 2: taking the back off and messing something up.
If anyone has any kind of advice, I would appreciate it. Thanks.