# 10.8" screen goes blank for a few seconds **URL:** \ **Category:** Troubleshooting (X35/X50)\ **Created:** [December 27, 2021, 12:18am UTC](https://forum.onefinitycnc.com/t/10-8-screen-goes-blank-for-a-few-seconds/9830 "2021-12-27T00:18:10Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [February 19, 2022, 4:50pm UTC](https://forum.onefinitycnc.com/t/10-8-screen-goes-blank-for-a-few-seconds/9830/7 "2022-02-19T16:50:06Z")
> [@How to connect the Touch Display (7, 8, 10.8")](https://forum.onefinitycnc.com/t/10-8-monitor-how-to-connect-it-to-power-and-the-controller/5081): > > 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 … --- _[View the full topic](https://forum.onefinitycnc.com/t/10-8-screen-goes-blank-for-a-few-seconds/9830)._