The journos, who belonged to TG Daily, were first told that the people looking after the stand couldn't find any HDMI tellies to run the consoles on. However the hacks pointed out all the TVs on the stand had HDMI inputs. The PR people started clearing their throats and claiming that they were a bit short of HDMI cables and that "they are difficult to find".
When they were offered an HDMI cable which one of the hacks happened to have in his car they said no.
No this has got everyone wondering. Maybe the PS3's HDMI isn't that compatible with the HDMI spec integrated in the tellies.
We know that the PS3 will use HDMI 1.3, but Sony's current TV offerings use HDMI 1.1, which do not support the Dolby TrueHD as well as DTS-HD.
Sony really didn't want the jounos to see what happens when you connect the two, perhaps there is some significant audio noise or it puts 14 million volts through you.
More here. µ