/vr/ - Retro Games

I still have no fucking idea what this potentiometer does. It's hooked right up to one of the legs on this Micro Genius' PAL Crystal. My PVM does not recognize the video output as PAL, so the games are in black and white. Does this little motherfucker modulate the chroma carrier?

Hey lads. I bought a Microgenius famiclone for dirt cheap and hooked it up to my PVM1344Q. It's a PAL-N device, yet the monitor doesn't automatically switch to PAL. The thing works if I hook it up to a different CRT. Is here a way to force this particular model of PVM to use a certain colour system?
If not - this particular famiclone has a potentiometer right next to the PAL crystal and by right next to I mean directly hooked up to. I get the feeling it is for modulating the chroma carrier value. Could giving it a spin work? pic related.