I have mounted my TV on the wall of my bedroom. The room is pretty small and I mounted the TV in the only possible place I could. The Problem: The TV is on the same spot the an exterior light is on. When the outside light is on, I get a nasty buzzing through the TV. Anyway to insulate against this? Any ideas would be helpful.
You could try a line regulator to plug your tv and it's connected items into. Check out the APC LE1200, it's a surge protector and voltage regulator in one and not very expensive and it works very well: