Chosen Solution
Hi every body i am using an 22" LG lcd display screen. last week a purple vertical line appear in the middle of my screen. I just want to know how to repear this thing. Thanks very much.
Genloga, a single one colored line can be caused by a bad LCD driver IC, TCP package torn and controller IC. Try to press on the top screen location where the vertical line is located. If that pressure gets rid of the vertical line, you will have a bad Tape Carrier Package (TCP). There is really no fix to it other than replace the LCD. Sometimes adding some pressure to the TCP either through cloth tape or other means can temporarily eliminate that line. Ultimately it sounds like you are due for a new panel. Hope this helps, good luck.
My fix for the single line was to clamp the top edge of the LCD. The line would disappear when the screen was lightly pinched with a finger but totally disappeared after using a welding spring clamp near top edge of screen.
