I'm having this problem on two different products. I'll use my NES for example. It's had that wavy video signal problem. Decided to do a full recap to it. Opened it up to find that the mainboard capacitors are... made by Rubicon, and probably fine.

That leaved me with having to replace the power capacitors. Only problem is, how do I get to the power PCB underneath an RF shield that appears welded shut?