I had flickering vertical grey lines accross the entire screen. I thought it could be a bad cable.
The repair went flawlessly. Screen and cables were replaced with no issues. Unfortunately, that didn't fix the original problem. I am guessing the real issue is the graphics on the logic board.
You have to know when to quit. The repair was worth a try, but a new logic board in an old iPad is approaching the cost of buying one that already works. I'm glad I tried and would not hesitate to attempt to fix a broken iPad in the future.