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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: lamb2k on July 06, 2023, 09:09:05 AM

Title: CoreGrafx Horizontal Scrolling Artifact with RetroTINK 5x Upscaler
Post by: lamb2k on July 06, 2023, 09:09:05 AM

Hello all,

I'm experiencing a specific issue with my CoreGrafx unit when outputting to a RetroTINK 5x upscaler. There's a persistent horizontal scrolling artifact appearing on screen. I've tried various settings on the RetroTINK and checked the cables, but the issue persists.

Has anyone encountered a similar problem or can suggest troubleshooting steps to resolve this? Any help would be greatly appreciated

Image: https://imgur.com/gallery/IVELKjF

Title: Re: CoreGrafx Horizontal Scrolling Artifact with RetroTINK 5x Upscaler
Post by: Keith Courage on July 09, 2023, 09:20:48 PM

Looks like a grounding issue. Usually this is caused by generic scart cables, generic power supply, or a weird ground loop in your homes electrical wiring. If you are already using good quality scart and power cables, then I would try plugging the power supply for the coregrafx into a different outlet in your home or plug your TVs power cable into a different plug in your home. Powering one or the other on a different circuit can fix this problem.