I've only ever owned one converter. It was a big purple affair, with a
large sticker on the top. It showed the converter being used on a PC-Engine
(ha!), and had a yellow star in the logo.
It was new, and it worked well, after I repaired it! It had come with a
broken pin inside, and it probably would have really pissed most people off.
As I was repairing it, I saw how it worked, and speculated that it could be
done with a couple switches inside the TurboGrafx. Years later, I came here
and found a guide on just that, but using only one switch, and that's what
I've been doing ever since!
So if everyone's real desperate, learn how to make your own!
C2H4