the ps3 works on one tv through hdmi and when i take it down the stairs it doesn't work and all the hdmi ports on the both tvs are working
More aboutwork hdmi
Does the other tv support HDCP (High-bandwidth Digital Content Protection)? If not, the PS3 won't display.
I think I remember having to hook my ps3 up using component cables and messing with the output settings to get HDMI to work on my HDTV. It was awhile ago though and the only thing I use it for now is to kick my feet up when using my computer.