Not good. I thought I had fried another LCD by not turning off power when moving some wires. Luckily the issue was some subpar solder connections, which I was able to fix. The solder issue doesn’t surprise me, since I slipped out some headers and tried to slide the wires back in without cleaning up any of the connections.
Lesson learned though. Fewer shortcuts with electronic components. Hardware mistakes are usually more costly than software ones.