ALLDOCUBE X turns screen off ?

Hi,

My AllDocube X turns the screen off whenever it gets a soft nudge like when I set it on the table or on the sofa for a minute.  I have to press the finger print reader to get it to turn back on again, sometimes I have to do this unlocking a lot of times.  Video keeps playing but black screen. How can I fix it ?

 

Model U1005

Junk made in China