I have a 6 ft HDMI cable connecting a DirecTV HD20 to an Onkyo TX-SR506. The TV is SamsungLN-52A750R1F. It's worked perfectly for 6 months but I have recently been getting a mode not supported error while trying to watch the DVR. The SamsungDVD-1080P8 works fine. The audio comes in fine.
The picture returns but only when I wiggle the cable around. The components were installed in an entertainment center that has very tight quarters. I can't see if the cable is kinked or if a component is sitting on it.
Could the cable have gone bad? Could the positioning of the cable be the problem?