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.