I've recently purchased a new TV for upstairs (CT-27HL14) and I'm certainly enjoying it... However, there are a couple issues I have with it and I was wondering if anyone could shed some light on them. First off all, there is a slight high pitch noise that occasionally comes from the rear of the set. This would not normally be an issue if it wasn't for the fact that it is generally NOT present... Basically, just randomly (generally shortly after initial power on) the set will emit this high pitch noise. If one was to lightly press down on the case of the set it would stop the sound. Upon removing your hand, however, it would begin again. It generally stops after a few minutes. The intensity is actually quite low (not everyone even hears it) but it bothers me a bit. The TV sits atop a rather small stand, but the stand it sturdy enough to hold it. The upper floor combined with this stand creates a situation where the TV is not on a totally solid surface (vibrations are common through walking around). On my older Toshiba flat screen, tapping a chair or stepping around would cause moire patterns to quickly flash on and off. One odd thing, there is a fix...but it depends on the time of day. During the first half of the day, the TV can sit flat and will generally stay silent. However, during the evening hours, it is more likely to emit this noise off and on. Propping a small magazine beneath the front of the set, however, fixes this....but only in the evening. I've tested this and it always seems to hold true...no matter WHEN the TV was first used during that day. What could cause this problem? I have a full warranty, so I'm not necessarily worried about that aspect...but I am curious. Is it a malfunction in the set? Could it cause problems? Is it more related to the environment? I have no idea, but I'd really appreciate ANY answers! Other related notes: I DO have a ground loop problem that causes slight interference bars to appear on the screen when running a component signal. This occured on both TVs and appears to look exactly the same (though it isn't as noticible on this newere set). Any idea if it is possible to remedy this?