Recently got a 2.0 board Woz which was on v6.50
I played it for a about 2 hours and everything was fine. I left it on in attract mode for awhile and when I came back the screen was black. The playfield lights still worked and pushing buttons on the cabinet or on the coin door still seemed to trigger actions and I could start a game. However the screen never woke up.
Power cycling the machine brought the screen back to working order.
I checked all the connections on the board behind the LCD screen and reseated things. Everything was fine for a day.
I updated to 6.61 last night using the delta update which went fine.
I was making some adjustments and noticed that I could tweak the X Y settings of the display, which I decided to do as I did notice some dead space. In the middle of adjusting the X axis the screen went black and then came up with the NO SIGNAL message.
I could still navigate the menus based on sound output from the game, again however the only thing that brought the screen back up was powering the game off and on again.
I assume this is not normal?
Game was a Standard edition built in March of 2017