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Sega Mark III RGB Amp

The Sega Mark III console has RGB output, but it's very weak. This amplifier will cure the problem.

It may also work with later revisions of the SG-1000 II which use an RGB-capable VDP, but this has not been tested.

The Circuit

  • This circuit will need to be repeated for every signal - Red, Green, Blue and Sync.
  • The variable resistor at the end is optional.

Many thanks to Backup Technique (バックアップ括用テクニック) magazine (Volumes 8 + 9), from whence this diagram came.

Thanks also to Kevin Horton, for helping fix the diagram, which was incorrect.

 av/sega_mark_iii_rgb_amp.1389755355.txt.gz · Last modified: 2019/08/27 20:44 (external edit)
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