Vertical Gray bars on LCD after battery replacement

My old battery had forced some of the touch screen from the frame so I bought a new battery. After watching a few videos I decided to take the battery out without removing everything in the Ipad. I used a blow dryer and heated up the area where the battery connects to the mother board. I pried up on the mother board and removed the old battery. I installed the new battery and plugged in the display. I usually check the picture before i close it up just in case. This time I have gray vertical lines but they come and go. I have tried numerous times to unplug and plug them back in with no luck. I even put the old battery in and still the same thing. I am able to power it up and see it on find my iPhone and make it play a sound. At this point Im guessing i have damaged the digitizer or the LCD but i dont know. Worst case senario is i buy both. If you have any ideas im open to any help. Thanks