Monitor will not power up

[OnefinityCNC (Onefinity Support)]

How to connect the Touch Display (7, 8, 10.8")

When connecting a touchscreen to the Onefinity controller there are a few key items to make it work correctly: Step 1: POWER: Every screen must be connected to external (wall) power to operate correctly. Skipping this step is the most common mistake users make. On the 7 and 8" screens, the 12v wall power adapter must be connected to the 12v in (red arrow) port. On the 10", there is no 12v power input, instead, a USB C port labeled with a lightning bolt is used (red arrow). This cable must be …