It isn't the file size the board doesn't like, it is the dimensions (board accepts 1280x720 but not 720x1280). Rotated as vertical so that the image would correctly show as being the left side of the TV (although pretty clear in the one with the lamp turned on next to the TV) would not allow the image to be accepted. The same exact size of file oriented as it is will be accepted by the board. Since I wanted to provide the clearest possible picture of the problem I added those as well.
Any suggestions as to what it might be or where I might look? I've had the light engine out and did a complete cleaning and reseat as instructions you've provided in another thread. Thank you BTW - TV actually looks fantastic and like new again except for that line.
The line developed before the most recent bulb/lamp issue which as I said seems to have resolved itself. It happened about 2 weeks prior. I've contemplated removing the front screen and seeing if there is anything inside there as I did not see anything untoward when the light engine was out.