Nintendo NES/RGB Mod Install
My buddy here in Europe picked up an old US version NES Top Loader (NES-101) that had a coaxial output. He picked up an RGB mod board that changes that coax output to RGB. This changes the output to the RGB standard to it can play on just about any TV worldwide that uses RGB inputs.
Anyway, this mod requires the desoldering the original CPU, installing the mod and replacing the AV jack. Below are picts of the one I installed.