I recently upgraded my HT receiver to the STR-DH770 because I needed 4K passthru. In the past 3 days, I've had 2 issues happen that I was looking for some insight on. 1. After turning on my satellite receiver, I got no picture on the TV. I turned on the receiver to ensure it was set to the correct input and it was. I tried turning off the receiver and turning it back on. Didn't work. I then turned on all my other components that are hooked up to the 770 and tried cycling thru all the inputs. Nothing. I unplugged the HDMI out to the TV and plugged it back in, but that didn't help. Just the same blank screen. I then realized I wasn't getting any sound out of my surround speakers on any input with 4 different devices playing that I was cycling they. Even if there was an issue with the HDMI out to the TV, I still should have gotten sound to the speakers. Finally, I unplugged the power to the 770, plugged it back in, and the picture immediately came on. Surround speakers were working again, too. 2. A couple days later, after watching a movie with the receiver and surround sound on, I hit the input button on the remote to switch back to the normal TV setting. Nothing happened. I hit the volume buttons, nothing happened. I hit the power button to turn the receiver completely off. Nothing happened. I got up, walked over to the receiver to switch the input by turning the input wheel. Wouldn't respond. I tried turning the receiver off with the power button on the front. Wouldn't respond. I tried turning the volume up and down with the physical volume wheel. Nothing happened. Again, I unplugged the power, plugged it back in and everything worked fine again. I've since completely unplugged the power, disconnected all the HDMI cables, reconnected the HDMI cables, and finally plugged the power back in. I haven't had any issues since, but, it's only been a day since doing that. I bought this receiver less than a month ago. Any thoughts on what's going on?