My V20’s screen stopped working suddenly. I opened it up and spotted lots of corrosion around the connector between the screen assembly and the motherboard. I cleaned it up with some isopropyl alcohol, but I couldn’t get some of the pins on both sides of the connector to look totally gold again. I put it back together and the screen works now with some new ghosting issues, but the digitizer totally doesn’t work. I wonder if these pins have burn marks on them that are preventing them from making a connection. I’ve tried a brush and even scrapping at them a bit with a metal pin, but they still don’t get clean. Here is a picture with red circles around the problem pins. You can see they are gray instead of gold. https://i.imgur.com/qCqvfBh.jpg
Is there something else I can try to get this off?