Nintendo Vs. Super Mario Bros. stuck rebooting

dysproseum

Member
Joined
Sep 9, 2010
Messages
35
Reaction score
0
Location
Orlando, Florida
I just picked up a Nintendo Unisystem conversion with Super Mario Bros. in it.

The game has a problem: it will turn on briefly, sometimes outputting a score count noise, and then go into a loop rebooting. Here is a video of it happening:

http://www.youtube.com/watch?v=gnKodENKmjs

I've reseated the roms, does anyone have any suggestions I could try to get it working?

Pics of the board and roms:

http://img18.imageshack.us/img18/1269/imag0198o.jpg
http://img88.imageshack.us/img88/567/imag0197g.jpg
 
I'd suggest popping in a new CPU chip if you have one handy. You can take one from a working Vs board or find someone selling one. In my experience, CPUs have been responsible for some wonky stuff in my Vs boards. If that doesn't work then get a new set of ROMs burned by Lilman here on the board.
 
Thanks for the advice on checking the CPU, Raikus. I just read a bunch of threads looking at every picture and configuration that people had, and after re-watching the videos on johnsarcade.com, I realized that the spare CPU on the unused side of the board was in the wrong place!

I moved it to the CPU slot instead of the PPU slot and it comes on and works! I think it means someone tried to swap roms on this board and screwed up. I think it also means I got a steal on this "broken" cabinet!
 
Glad to hear it dysproseum! Every problem I've encountered with a Vs game, excluding the actual PCB being damaged, has been remedied with a good CPU.
 
a testament to their build quality. I still find it thoroughly amazing that they label the cap values on the boards. :D
 
Back
Top Bottom