Onefinity screen just blinking on and off

[OnefinityCNC (Onefinity Support)]

No signal on Screen / No video output from controller - Troubleshooting Video

If the screen is turning on and showing a blue splash screen but no input video, try the following: (this should be an obvious first step, but make sure everything is plugged in exactly as this faq shows (a lot of people forget the wall power plug): How to connect the Touch Display (7, 8, 10.8")) Plug a different device (dvd player, xbox/ps, cable box, etc) into the screen and see if it displays video. If it does, the screen is fine. Try a different hdmi cable. This will determine the h…