Originally Posted by Alexander Hausmanis
20usd reward for the person who helps me fix this
I just purchased the Pio 830 and had the same "gray" issue as you. My previous unit was an Onkyo that did not exhibit this behavior. Like, you, In my case it was especially noticeable when I selected my Roku3 connected to the HDMI of the 830.
But in my case, I was able to finally able to resolve this:
My TV is a Panasonic TCP55VT30. When the Roku3 was connected directly to the TV, I do not see gray issue. I concluded that the TV was fine and it must be the fault of the Pioneer. Be that as it may, I dug a little deeper and noticed on the TV Picture Settings, there was an Advanced Picture tab. There is a setting for Black Level and in my case it was set to Light. I set it to Dark and my "gray" went away. There is a comment in the user manual that this setting is for external inputs only.
The funny thing is the only HDMI connection to the TV is from the 830, so I surmise that that output of the receiver is the culprit and the TV has a way to resolve it. At least in my case.
Another issue that bit me regarding the Auto Surround settings:
I was going nuts trying to understand while I was watching TV I would see a 5.1 logo on the guide, but only would get Stereo. I have Comcast and I finally noticed that some channels came up Dolby Digital and some came up with Stereo. It wasn't until later in the evening that one station that was in Stereo during the day, was now showing Digital. I did not have to push the Auto Surround button to get this. I concluded that the Guide data wasn't very accurate and at the time I was fighting this issue, there was no 5.1 data being broadcast. Changing inputs between my BD and Roku followed true and I did not need to keep hitting Auto Surround when switching sources.. I do find that if I get a Stereo indication on a station, that I do instinctively push it..but so far it appears to be working for me. This effect was mostly noted by me on Fox between news(or daytime shows) and prime time shows or movies. So I guess that despite the guide claiming 5.1..it might not be in my case