NTSC Gen 1 US SNES Garbled Video After Drop

A couple of years ago I dropped my SNES by accident from a decent height and it landed onto the top of the console. I'm attempting to repair it now. I have three games and a Super Everdrive to attempt to use.

Super Mario World loads as is shown in this video http://youtu.be/w4N7QJNUWI4 Star Fox seems to load fine but it shows no video at all. It sounds fine and I can start the game and crash my plane. Illusion of Gaia does not start at all and just shows a black screen with no sound at all. I have a Super Famicom and I have tested all the games on it and they work fine.

Here are pictures of the board. http://imgur.com/a/0fjIa

One picture shows what looks like some melting opposite of the AN78D5 and another shows some excess solder that seemed to need to be scraped off of the area around the expansion port slot. The traces seemed to all be connected fine however.

Does anyone have any idea where to start with this? This is my original video game console so I'd like to keep it as original as possible, i.e. not replacing the whole motherboard or anything. Thanks!

EDITED: Fixed the youtube link

 

The system boots up so it's a good start (it means primary checkup runs ok).

I would say it looks like a video ram issue.
I will check if all the chips are correctly welded: maybe the shock broke or lift some pins.

Also around the BA6592 (the video output) and if you don't have a caps who take shoot around when the console fell (any deformation or not seated correclty).

 

Looks like the C67 cap is missing?

Compare with this:
http://www.videogameobsession.com/videogame/snes/hardware/snes1_internal/snes_internal_board-02.jpg

 

It's normal that some boards are missing the c67 cap.

You could try and recap the whole board,did you check the s-wram chip or any of the ppu's.

 

My system never had a capacitor there because I'm the only one to open the system since I got it new in 1992. Am I correct that by checking the chips you mean to check that the pins route through to the board and that the traces correctly route to the other locations properly? Is there any way to determine if any chip failed, and which chip failed, other than desoldering it and connecting it to a known working motherboard, or vice versa? Thanks!