I dont know- I tried a Google search and I didnt get much- but I did not kill myself. But it does not surprise me that your set cannot accept 720p- this tells us something. 720p scans faster than 1080i- I think- the memory is a bit rusty. My guess is your set does not show 1080P because that would be even faster. I think my advice about 480P being the sharpest rate for your set is likely to be true.

best regards,
Jerry

Best regards,
Jerry
Main System: 861v6, DSP8000s in corners, DSP7000s Center and Sides, 1-9 humans.