What is wrong with my PS3? The unit works but it doesn't display on the tv screen. Is it the HDMI cable or the ps3 unit itself?
Try the composite cord. Check the port on your PS3 for looseness, shine a light in it also to make sure everything looks good. Check the TV HDMI port also. Try different HDMI cable. All of that checking will designate what part it is.
Dreamcast is better.
Try replacing the HDMI