Hello all. I don't know what's going on with my tv. I have a Mitsu 65857, and I've had it about 2 and a half years. It's been working great, and the HD pictures are really good as well. Well that was until the other night. For some reason, the HD picture isn't as sharp anymore. HD Net is still pretty good, but there is just something missing. The regular picture seems to be fine, but the HD feeds for the local channels are really grainy and aren't crisp. Even my wife noticed. I have a 5 year warranty on the tv, so I have someone coming out to look at it, but does anyone know what might be going on and what I should ask the technician to look for when he/she comes?