The reason your phone goes blank at intervals is because there is a problem with the phone.
First, flash the phone with the appropriate software and cable, then you open up the phone with the appropriate screwdrivers and check if the screen connector also known as the flex is properly seated on the main board. Also check if the flex is damaged so you will be able to replace the flex with a new one.
Having done this, your phone will be in good condition once again.
Answers & Comments
Hello,
The reason your phone goes blank at intervals is because there is a problem with the phone.
First, flash the phone with the appropriate software and cable, then you open up the phone with the appropriate screwdrivers and check if the screen connector also known as the flex is properly seated on the main board. Also check if the flex is damaged so you will be able to replace the flex with a new one.
Having done this, your phone will be in good condition once again.
Take care and good luck