I've heard speak of the "vertical line" problem on basically every Famicom/NES except the American-toaster model.

I just modded my Famicom successfully to output wicked AV/Stereo sound. It sounds great, and save for one issue, looks fantastic as well.

I have the "discolored vertical lines" problem. It's not too bad on stationary-screen-based games like nazo no murasamejou or zelda, but for stuff like SMB2j, it's really distracting.

The part that makes me feel a little bit better is that it does it on RF modulation too, indicating that it's not something I did wrong in my modding.

My question, of course: "Is there a way to fix this?"

I read something online about replacing a capacitor somewhere in the video circuit on the NES2 from America; would this same procedure work on the original HVC-001 Famicom, and, if so, is there a nice, well-documented tutorial on how to do so without breaking anything?