Does anyone know what the values of the VR500 and VR501 should be? Thank you.
I could probe the values on mine if you want, but I'd guess that the values are specific to each unit. Thus the need for potentiometers instead of a resistor. I set the voltage with VR500 to about 4.6v when used with a 7v power adapter from retrogamecave, starting at its highest resistance value to avoid blowing the fuse (again, heh) until I arrived at the voltage I wanted, and tweaked VR501 until the display was as clean as I could get it. I'm using an LCDDRV display mod though.