Denon receiver issue

I bought a Denon AVR S720W Black Friday and I am having an issue with it. I have an xbox one S, directv genie, Samsung blu ray player, and HTPC hooked up to my AVR, and then from there to a Vizio P-50 C1 through ARC. When I turn on my TV usually my receiver turns on and then displays the source and audio like normal. But recently, when I turn it on, the TV will sometimes blink with the picture for a second, and then I only hear the sound. Sometimes I don't get sound or picture, and sometimes just picture. It's really odd. I tried swapping the HDMI cord, no change. I unplugged it for several minutes and plugged it back in, that worked the first time I turned it back on, but then it went back to normal. I usually have to turn the tv and receiver on and off a bunch for it to work. I thought the receiver might be over heating, but it happens after the receiver has been for for several hours in a cold basement(65F).

Am I screwed and my receiver is taking a shit on me? Is there a firmware update that can fix it?

Submitted by newhomelabber | #Specialdealer Special Offer Online Shopping Store 2016