Ok I have been trying all night to fix this problem with no luck.

When I got my ps3 I set it up using the hdmi cable and everything worked fine. The display it selected was 1080i, I used it like this for like a month. Now my tv has 480, 720, 1080i, and 1080p. Earlier I was messing around and went to the settings and chose 1080p instead of 1080i, when I did this the screen went black and would not come back up so I turned the ps3 off. When I turned it back on I still had no picture or sound. I tried the reset thing by holding down the power button, and still nothing.

So I pulled out the provided cable (red, yellow, white) and plugged it in, and the picture/sound came up. Now the first thing it asked me was if I wanted to use the hdmi source so I told it yes, then the picture went black again. I tried reseting it again with no luck, even tried reseting the system to default and still nothing. Every time I try to select hmdi now the picture goes black.

does anyone know how to fix this?

Thanks for the help, I did find the problem i do have a 1080p tv but it has 3 HDMI slots and only one of the takes 1080p the other two only do 1080i.