Same thing happened to me mate with my PS3 when i switched to my HD TV. Took me 3 HDMI cables before I found one that would work fine. My old cables were okay, but static would flicker onto the screen every so often.
I found the cheaper HDMI cable I got the better it was.
Hell hath no fury like a woman scorned for Sega. - Jason Lee, Mallrats.
http://theaveragejoe.sportsblognet.com/ - Mainly American Football, snippets of Basketball, European Football and Hockey.