If it’s under warranty, send it back.
If it’s not, have someone competent open it and check the ribbon cable between the two boards. This can (rarely) come loose or develop bad connections.
Generally speaking, these kind of issues happens, is the ribbon cable to be changed or just to be reconnected?
I mean ‘WHEN’ these kind of issues happens (I forgot the ‘when’ word and couldn’t edit the post)Show More...Show Less...