Hello, I have a Panasonic "Viera" Plasma 50" and my HDMI port won't work anymore. It worked fine for a couple of years and then one day I had the laptop plugged in (something we did all the time) and the laptop went to 'sleep'. Only, as it went to sleep, the tv did too.. It faded to black at the same time and the same way the monitor does.. And ever since then, it has stayed black on the HD channels. I haven't been able to get any HD cable on any device to display on the TV. It does have 2 HD ports, so naturally I tried the second one.. It doesn't work either. It seems unlikely that both HDMI ports broke simultanously, and so I think that it may be something to do with the CPU, rather than the physical HDMI port. Either way, someone please help! Thank you!