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.

i cant see it in the picture.. your BB is very dirty!!!
:::::BEST REGARDS::::

yes, it's dirty, but even it is clean, it is barely can be seen through my camera. See the face of left person, you can find these strips.

hardware problem is the most common situation if it is persistent in all screen...

Check Cellular Nationwide Network - 3G, Sony, Panasonic, LG, SonyEricsson, Nokia, Tools, BlackBerry, for a new screen..

GoodLuck!

my concern is what if the mainboard has some issues, because it does not happen very offen.