power window issue

hi im new on here im about to buy a 1991 Acura Integra and one of the problems is that the driver side window starts to pop out of the track when bringing up the window. Im assuming it may be slipping off the track so im gonna take off the door panel. But what exactly would i be lookn for and what are the most common techniques of fixing this problem thanks

it could be a tangled wire or maybe even a lack of lube, get some wheel bearing grease or something and lube the bitch up!