we are having some trouble with the HDMI cables from the ps3 to the plasma.

we actually have two plasmas and two ps3's
we were having trouble with one hdmi cable, so i went out and brought another, and not a cheap one.

50% of the time when we start up the ps3, the samsung plasma displays 'mode not supported' - this happens with most blue ray dvd's and also a burned normal dvd, and some times just trying to get the PlayStation screen up - but some times the blue ray does work!

the celestil plasma displays nothing.

its so strange. we can get sound because the optical sound cable connects straight into the amp. and some times there is no problem. tried swapping the cords, tried reversing the cord, tried swapping the playstations.

its just strange cos we are getting a 50/50 strike rate. sometimes it works. sometimes it doesn't. and one of the cords is brand new!

any one had the same problem before?

any ideas?

any feed back would be greatly appreciated