This is my first post, which reflects how few problems I've had since getting my F38310 nearly six years ago. But I've had a nagging problem that doesn't seem to have cropped up for any other user, or at least, not that I can find mentioned on this board.
Here it is: I recently got a Tivo/DirecTV HR10-250 high def PVR and hooked it up to the component input of the F38310. The resulting picture for high def channels is superb, and standard definition is OK. BUT . . . inexplicably and without any apparent trigger, the screen goes haywire and about half the viewable area (bottom half) gets overrun by horizontal, thick-banded multicolored lines stretching from left to right across the screen. They occupy the screen for anywhere from a second to 30 seconds, then disappear and all is well again. I see this problem manifest itself three or four times a day. It happens ONLY on the component input, and I checked the HR10-250 on another TV and it works fine.
More information that could be helpful: I have noticed that the "Rainbow Lines" phenomenon happens when I have the Tivo in 1080i mode. If I get the rainbow lines, and switch the Tivo's output to 480i, the problem will correct itself. BUT . . . occasionally when receiving 480i, the F38310 screen goes blank and gives me the "weak signal" message. The duration of the message is about the same time range (1 to 30 seconds) as the Rainbow bars in 1080i, so I think it's the same issue that's just presenting a different symptom ("weak signal" versus multicolored lines.) Is something wrong with my component connector on the F38310? I've also tried connecting my Sony CX777es DVD changer to the component input, and again I get the dreaded "weak signal" message very frequently while watching a DVD. Also, the colors on the DVDs are washed out.
Can anyone give me any advice? I'd really appreciate it. I love this TV and it has served me well, but I'm worried that this problem may be the deciding point in getting rid of it . . .