We've had this tv for nearly three years and have had no problems til recently. For whatever reason, it appears that we have burnout on the screen and seems to be spreading. It is not complete burnout and seems to be better with varying shades on the screen: i.e. - the darker the picture, the more noticable. Also, just this past week, when the tv is turned on, it gives off a very loud whining sound that eventually quits and disappears after 30 seconds-1 minute. What could be causing these problems in such a ''young'' tv?
The noise is probably due to bad caps-stiv0 has tips on how to change capacitors. I had the same noise and tv would come on after plugging and unplugging but eventually stopped coming on. I just changed the caps and now it works perfect and took approx. an 1hour and supplies cost approx. $10.00. Good Luck
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You have an analog TV, meaning that the tuner in your TV is analog only. You must buy a digital converter to see broadcast Digital TV via your external antenna and it will be attached to the antenna input jack or other jack depending on how it comes out of the converter.
One bit of advice, there is no such thing as a "digital" antenna, they are all analog. Even a 50 year old, outside antenna aerial that you see out in the countryside will pick up the new Digital Broadcasts to be converted by a Digital Converter and displayed on a 50 year old TV.
It appears like your power supply is not filtering the voltage properly and that is why you are hearing that high pitched noise. If your LCD is less then a year old, you can call Polaroid to have it repair under warranty.
If more then a year old, check the info from this link to replace the capacitors.