So I took it off, replaced it with the new one, and nothing happened. So I took it off, but while I was prying and heating it off, I forgot to turn the power off, and some sparks appeared. And it started to work. But it was horrible! Black and white, and wavy and everything. So I took it off and put the old one on. Now the colour gets better as the volume goes down, and the screen moves like a wave. I'll get some pictures...
It's sort of like a permanent degauss...
EDIT:
I thought it was a grounding problem, and I was right. The 7805 or whatever wasn't grounded when I stuck it back. Back to the old problem!