This started about two weeks ago. I was watching Sherlock on PBS, and every minute or so, a few white boxes appeared on the screen with the audio being messed up and then it went back to normal. This also happened when I was watching Law and Order SVU tonight. Whenever the screen turned black to list a new location, there were pixelation problems. Went it cut to commercials, pixelation problems. This also happened during SNL.
I tried to reset the TV by unplugging and waiting 30 seconds but it hasent helped. I tried to fasten all the wires on back of the box. Is there anything I can do? If I call to have them send someone, I may not necessarily be able to replicate the problem, since it's only happened on these shows on these channels (NBC Nightly News worked just fine.)