Gaphic glitches on MVS board

Hey all got a 4 slot very very cheap with graphic glitches. Text is fine but graphics break up into squares.

Anyone with any ideas where to start.

Already done, cleaned contacts on both carts and slots.

thanks

Bri

If you already tried multiple carts and still get the same result, I would make sure that it is in there securely. Make sure all the MVS pins are contacting properly. They may be too loose... That is the only thing that I can think of, other then a cleaning. Good Luck!

Yeah, tried 2 carts in different slots. Sprayed the whole thing with contact cleaner etc.

Wondering if its a chip problem now.

Bri

Ok , been thinking about this a little more , and with the graphics getting mixed up , would this sound like a memory adressing problem?

Bri