as it "warms up" (until it displays the picture) there is a high pitched whine--im guessing from the tubes warming up. the tv is brand new and returning it (since im at college) will be difficult. the only thing that comes to mind is the fact that it was in my car with no heat on and got pretty cold for a little while as i moved in other stuff (when i first got it out of the car and turned it on the whining--at even high volume--remained until it heated up). could there be permanant damage due to the cold, is this something that will go away, or is the tv defective? (more for future reference, especially if i have to worry about the replacement doing the same thing)