Yes it is an easy fix....make sure the tv is disconnected from the mains,...lay it flat ...face down on a bed or duvet to protect the screen and remove all the screws the hold the back panel....obviously there should be no cables left in the rear sockets...prise the back panel off and then look for the ribbon cable connector that goes from the LCD to the main video board...it needs to be cleaned and reseated......this is a good time to use the hairdryer to dry it through completely.....once you think it's dry...connect the back panel and switch on....if the lines are still there repeat the steps one one time....once the screen appears normal put the rear panel on and this should resolve this problem.