It's July now, so you have probably already decided what to do with the TV. I have found answers at http://ths.gardenweb.com/forums/load/electronics/msg0422572015185.html Evidently this model had design flaws. My TV is doing the same thing. I hear repair estimates are high, so plan to give a home repair a try since I'm not going to pay more than I did for the set 2 years ago to have someone fix it.
Lisa H, July 2005