Quoted from LP30:I went through the LCD controller menu last night and wasn't able to resolve the problem. This morning I detached the HDMI cable from the LCD and attached it to a computer monitor. It has the same problem. That eliminates everything but the main controller board from the loop. I don't see any type of control setting for the display on that board, so it may be a bad board. I suppose there is a small chance the cable could be an issue, but I don't have a mini HDMI to swap that with.
If you wanted could you use a hdmi splitter to run the dmd through you big screen tv and the DMD?