Picture blinking to black
I posted a similar question in a different subforum but think this might be the best place to ask it.
To summarize my issue: I have an LG C7P hanging on the wall, which is connected via HDMI to a Wyrestorm EX-40-G2 balun. Balun runs Cat5 cable through the wall, coming out the other end (25-30 foot run) to another balun, which connects via HDMI to a Yamaha RX-A770 receiver. Connected into the receiver are an Xbox One and DirecTV HR44-500.
I have been experiencing periodic picture drop on the TV, particularly when watching DirecTV. Screen goes black for a few seconds (sometimes 1-2 seconds, sometimes 4-5) then image reappears. Audio plays throughout and is never disrupted. This happens more frequently with DirecTV, but also happens occasionally with Xbox One.
So far I've turned off HDMI control on both the TV and receiver, power cycled everything, set DirecTV to a single resolution and turned Native function off. Doesn't seem to have any real impact, and the issue seems to be sporadic - for example I didn't have picture loss issues for a week or so, then they started up again. I've also connected the DirecTV through the Xbox One to see if that would change things, but that didn't help.
When swapping out the video sources to a different, older TV and connecting it directly to the Yamaha receiver via HDMI, no picture loss issues happen and everything seems to work fine.
My suspicion is that the issue is with the HDMI baluns and so I've ordered a RUIpro 33 foot fiber optic HDMI cable and will see if that solves things. If that doesn't work, what else could it be? Everything is updated to the latest software / firmware, too.
Appreciate any feedback you might have, thanks very much.