Metal Slug 4 game failure

[dragonpt]

The problem is most likely that the MS4 cart PCBs are too wide and need to be shaved. This is a common problem with them.

If you measure one of the boards in the working games you will notice that the MS4 PCBs are slightly wider, this causes the boards to warp when inserted into the cart slot and breaking connection. You should only need to shave them about 1mm per side for both the PROG and CHA board.

Jess's

Finally i can play my original MS4 without issues...

How did I missed this ? Lol

Same thing on the 161-1 multicart as well

Thanks James

Edit: I also had to shaved the SS5 a bit