I recently got around to looking at a CC I got last year that needed a recap. I removed all the capacitors and noticed a lot of leakage around them, so I painstakingly removed nearby chips, cleaned underneath, and checked all nearby vias to make sure all the pads and vias were still good and connected. To check the vias, I simply checked continuity between the components on each side of the board that were connected through the via.
 
Sure enough, the only via I found that was broken was the same one from techknight's diagram above. Nice work uniserver and techknight! Here is a closer picture:



As you can see, that via is about as close as you can get to a capacitor, so it's not surprising that it rots out. Here's the fix I did on the bottom of the board:



I just completed the recap and fix this evening, and now the Color Classic is up and running!