Contrary to what people believe, there IS a middle ground between totally fried and working fine.
Being that your computer is mostly working now, there is a good chance it will definately fail at some point. There's no way to tell what kind of time table you have. Accidents don't always kill the computer right away, but they do significantly shorten the lifespan of a product.
The video problem you have is one of three things: Logic board, cables, or LCD. Taking out the LCD to get it "drier" is not going to help. There is a damaged component in one of those three.
I would say keep using your computer as it works now. When it stops working... get a new computer. No point sinking money into a lost cause.