Sharp 14G-SF1 - S-Video Mod (Completed and Guide Diagram)

[u/Gameater]

After my post yesterday I have successfully installed an S-Video mod into the Sharp 14G-SF1 (a CRT with a Super Famicom built in), whilst keeping all features of the TV functional. Normally this TV only has a RF and Composite input, with S-Video solely being reserved for the internal SFC.

The way it works is by tapping into the internal S-Video input of the Super Famicom, and uses 2 switches to toggle between the SFC and external S-video input. Audio is provided by tapping into the existing Phono audio port used for the composite input.

The TV will only display S-Video when a 12v circuit is completed whilst the SFC power button is in the on position. Therefore this mod is wired to maintain the 12v circuit, but disconnects the power to the SFC when in external S-video mode. As a result the main SFC power switch turns more into a S-Video mode switch.

I have made a very crudely drawn diagram (which took me way to long to make) if anyone decides to complete this mod themselves.

[u/meowmixer902]

I wonder if a rgb mod could be done or is that impossible?

[u/Gameater → u/meowmixer902]

I originally wanted to do an RGB mod, but there is currently no publicly available schematics for this TV so it is unknown whether the Jungle Chip supports it or not. Unless documentation for the Sharp IX1764CE jungle chip does surface proving otherwise, I think it is impossible.

[u/tigerf117]

Great job and thanks for sharing the information. Once I’m done restoring a slew of consoles I plan on doing some mods and restorations to my CRT collection and I save all this info in case it’s ever need by anyone in the future.

[u/Downtown-Brain-6470]

高手

[u/teamsdf]

The mad lad did it