Most likely vertical lines caused by a bad T-Con board. I suggest you contact your manufacturer if this is still under warranty so they can help you with the repair, or if not, contact any local repairman and have them check the board for any obvious damage.
Most likely vertical lines caused by a bad T-Con board. I suggest you contact your manufacturer if this is still under warranty so they can help you with the repair, or if not, contact any local repairman and have them check the board for any obvious damage.