It may be a loose screen flex cable connection on the systemboard or a faulty screen.
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When the screen is black, try shining a torch at an angle close to the screen to check if there is an image there or not. It will be very faint if it is there.
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If it is there then it is a backlight problem. As it is only affecting one half of the screen it most probably is an internal screen fault
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If there is no image there it may be a loose screen flex cable connection on the systemboard or a faulty screen.
Here’s a link to the ifixit [guide|109826] guide.
This should help you to open the phone so the screen flex cable connection can be inspected (cleaned?).
If this is not the problem then most probably the screen assembly will have to be replaced.
Replacement screens are available online. Just search for ''OnePlus 6 lcd screen part'' to get results for suppliers of the part
Hi @olian ,
It may be a loose screen flex cable connection on the systemboard or a faulty screen.
Here’s a link to the ifixit [guide|109826] guide.
This should help you to open the phone so the screen flex cable connection can be inspected (cleaned?).
If this is not the problem then most probably the screen assembly will have to be replaced.
Replacement screens are available online. Just search for ''OnePlus 6 lcd screen part'' to get results for suppliers of the part