Hi, I recently bought a Yamaha RX-671 Receiver and have been using the HDMI passthrough from a few devices to the TV. It has worked fine for about a month, but last night the TV started giving me an "unsupported mode" message. When plugged directly into the TV, all of my devices work. I have tried both resetting and updating the firmware of the receiver to no avail. Is there some solution to this?
There's a button on the receiver's remote labeled "HDMI" - press it once, wait a second.
If nothing comes on the screen, press it twice, then wait a second.
If nothing comes on the screen, press it three times,
and so on.
STOP when it shows something.
Pressing that button will cycle through the HDMI modes. (720p, 1080i, etc.)