I got the phone on ebay, the seller said it is in perfect condition, but after using a while, I found a hidden issue, the LCD will display horizon strips from time to time full sceen. it can be fixed by pressing a little bit of the left middle part of the screen or turn the screen off. Seller refused to accept return, so i am thinking to fix it by myself.
My question is , if this can be fixed by replacing the LCD ? Because I am not sure if it is LCD issue or mother board issue.
I attached a pic, but I am not sure if you can see these strips clearly.