Hi again SGTVIDEO,
I don't know if I have discovered anything of any interest in my problem but here goes,
When I press menu on my tv remote while just watching tv the options come up and at the bottom is 1080i, H:28kHz, V:50hz. When ps3 is connected up and custom display setting is set to 1080i, the same thing reads 1080i, H:33kHz, V:60hz. When ps3 is set to 720p in custom settings we read 720p, H:45kHz, V:60hz and finally when ps3 is set to 576p it reads 576p, H31kHz, V:50hz. I don't know if that means a lot to you, maybe it may confirm my tv is compatable or not.