Hi Guys!
I hope I'm posting this in the right place, since it actually applies to the 2600, 7800 and Flashback consoles when connected to Vizio smart TVs.
Here's a little background on the issue, before I tell you the solution. (This may be a problem with other HDTVs, so it may possibly help more than just the Vizio owners). When connecting the various Atari systems to a 47 inch Vizio smart TV, some games would simply go black for a second or two. Space Jockey being the worst. It was completely unplayable. At first, I thought this was an issue with the 2600, but then I had the same issue with the 7800 and a Flashback 3 and 4. I searched google for a solution. Some people said turn off the backlight, others said turn on "Game mode". Of course some said the TV needed repair. LOL I tried turning off different options and changing settings on the TV and noticed something. The game wasn't the only thing going black. The TV menu window was also disappearing when the atari was turned on. So, after going through all the settings and then going through all the advanced setting, I finally ended up on the "smooth motion" setting. When I turned this feature off, the screen stopped going black. Making all 2600 and 7800 games playable (including the Flashback console games). I don't know if this will help other people or not, but I wanted to share it, just in case. If it helps at least one other person, then I feel it was worth posting.
I know a lot of people prefer to play on CRts (I do myself), but in some cases, due to limited space or lack of a CRT, we are forced to play on what we have available.