What's new

First JAMMA board issues - diagonally flickering screen. [SOLVED]

daeds

Beginner
Joined
Aug 3, 2025
Messages
5
Reaction score
6
Location
Portugal
Hey there good people,
I'm very very new to all of this, I bought a Supergun and an original SUNA's Hard Head 2 PCB (that was working when the guy sent me) and now, when I plug everything, all the screen does is flicker diagonally, I can see the ROM test going, and the title screen (even some demo gameplay) but it keeps flickering and sometimes it changes the tone of the colors.
Sometimes, it goes stable for a second or two and goes all flickering again.
I've tested my setup with my NeoGeo MVS and it works fine, so I guess it's the board?
Anything easy I could try doing?
If you need some photos of the board and whatnot I can post them.
Thank you so much!
 
Hello there!
After burning some eyelashes I figured that the chinese supergun connector has a smaller spacing than the board and, after getting it a bit to the side when connecting, it works!
Hopefully this will help someone.
I'm a happy camper!
 
Back
Top