So after reading about all the SNES variants and wanting to know what video encoder chip I have, I opened up my SNES. I always loved knowing that I had one of the first models of the SNES. SHVC-CPU-01 Rev 5 with a S-ENC 9231 M51 F video encoder chip.Then I realized something was missing. The C67 capacitor spot is blank.

http://i103.photobucket.com/albums/m...006/SNESR5.jpg

Now I looked it up and found a SHVC-CPU-01 Rev 2 board on Wikipedia and turns out it has a capacitor.

http://upload.wikimedia.org/wikipedi...PU-01_F_01.jpg

Now my SNES works perfectly except with Super Mario Kart which for some reason doesn't play properly on it. My question is, what is the C67 capacitor used for?