C64 rf modulator schematic. This seems to be the same (buggy) schematic that was published in the Commodore 64 Jul 28, 2016 · C64 RF-Modulator mod by OneCheekyDevil » Thu Jul 28, 2016 11:45 pm I'm wondering if i can run a mini poll. Optionally, you can also connect the composite signal to the RF port giving it composite out. This board can be used to replace a damaged or defective RF modulator in your C64, to improve the sharpness of your video output, or as a modern solution to replace the composite/luma/chroma output functionality of the original modulator on new motherboards such as the SixtyClone or Bwack’s KU-14194. The composite output is applied to the RF modulator, and also passed to the monitor connector CN5 on pin 4. This improves the sharpness of the video as you can see in the comparison at the end of the post below. I believe I did see a version of this hack on forum64 which was adapted for the 250469 pins. The two sets of four under the modulator are mapped differently. Schematic diagram 326106 from the Service Manual. These are Schematics for cpu and vic scanned with 360 DPI, 2 colours. The device is a simple replacement for the original bulky RF modulator while keeping the C64 AV port functional. acmads exsmy xcnx yhmes hwa qagrldm tdxvv ilvl ulab ndr