Uni Bios Error

[brendan1495]

Hi all, would anyone be able to help with this issue, I bought this from aliexpress last year for a project and made the mistake of not testing. I have just come to use it and I am getting a green screen with illegal instruction, done all the usual cleaning connectors etc and still the same. Any help would be appreciated thanks

 

[Kujako]

I'd start by cleaning everything really well. Both the cartridge being used and the cartridge slot on the Neo Geo MVS. Use Deoxit or if you can't get it isopropyl (90%).

The Deoxit is electronic safe (non-conductive) so leave some on the cart after cleaning and insert and remove it several times to clean the cartridge slot.

 

[brendan1495]

I'd start by cleaning everything really well. Both the cartridge being used and the cartridge slot on the Neo Geo MVS. Use Deoxit or if you can't get it isopropyl (90%).

The Deoxit is electronic safe (non-conductive) so leave some on the cart after cleaning and insert and remove it several times to clean the cartridge slot.

Thanks will give it a go