This problem is rather new. I am on my second SciAtl 4250HDC receiver as well...I've had it connected to my Phillips 42" LCD TV (42PFL7422D) since October and it has worked fine over HDMI (except for the HDMI port just dying on my first one). Over the weekend, I decided to grab an Onkyo HT-SR80 system. I connected the 4250HDC directly to my Onkyo receiver using a coaxial digital audio cable and suddenly, no more picture on my TV. The sound works great and is in DD5.1 (On the HD channels), but my TV just displays "Unsupported Video Format" and just seems to give up. Did my cable box just freak out because I am now using the digital audio port with an HDMI port? I unplugged the receiver and tried it again without the digital audio port, but the same problem occurred. What happened? It's been working fine so I know it's not an issue with the TV recognizing the 4250.