[Cliss09]

I have had my 42lg50 for about a week now and have been happily playing my ps3 on it through a hdmi on 1080p but turned it on last night to be greeted to a "no signal" and just the sound of the PlayStation. I have tried resetting the Playtation and it works fine in 720p and standard but when i set it to 1080p the "no signal" appears with no picture. It works in 720p on my other television fine. I have tried resetting, swithching the cable around and tried all other ports but still the "no signal" still appears when i try to output in on 1080p. This is strange as it has been working perfectly all week. Could this be a problem with the cable or something to do with the tv or playstation. Any help appreciated.