White lines on Screen with Chinese EverDrive
Hey, ran into a weird issue with my SNES (US 1CHIP) and I’m kinda stuck.
When I play original carts (both US and JP), everything looks totally fine, clean image, no weird stuff at all. But as soon as I use a Super EverGenesis(AliExpress EverDrive clone), I start getting white horizontal lines and the picture gets wavy, like it’s drifting or something.
What’s really confusing is this: if I unplug the power supply while the console is still switched ON, those white lines kinda disappear. But even then something still feels off — like there’s slight jitter or shifting when stuff moves on screen (noticed it a lot in Super Castlevania IV), and it honestly starts to mess with my eyes after a bit.
I’m in a 220V country so I’m using a Chinese power adapter for the SNES. I also tried running that through a Japanese step-down transformer (both 100V and 110V), same exact result, no change at all.
Also worth mentioning: I have an N64 with a Chinese SummerCart 64 (EverGenesis), and there are zero image issues there — but on that setup I’m using an original US power supply running at 110V through a transformer.
The guy I bought Super EverGenesis from tested it on his Super Famicom and it worked perfectly, but he was using a modern TV, while I’m on a CRT.
So now I’m not sure what’s going on. Could it be the power supply being noisy or low quality? Or maybe EverDrive just behaves differently power-wise compared to original carts? Or something weird with CRTs?
Anyone seen this before?