Small black rectangles randomly appear on my screen. Sometimes turning tv off and back on gets rid of them, sometimes it doesn't. They can appear anywhere on the screen. Sometimes it's 1, sometimes it's 3 or 4. ANy ideas?
same problem with the random black squares, only on a vizio 32" LCD
used to happen only on 1 or 2 channels, but lately it occurs on local stations and with more frequency, although changing channels (up or down), then back usually corrects the problem- for 5-10 minutes.
Other nights it never occurs, totally random!
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