[REPAIRED] M.I.A. Missing in Action Konami Twin 16 repair help

[Tailsnic Retroworks]

Hi. I have managed to make boot a M.I.A. Konami Twin 16 version, but I have graphic glitches. All the test section says OK, but I don't know where to look for fixing the glitches. I have a The Final Round if I need to test customs for desoldering them. 007783 and 007785 are already good tested.

 

[Tonitoxarcade]

My advice would be to check the Fujitsu TTL chips, as those motherboards are infected with them.

 

[Tailsnic Retroworks]

My advice would be to check the Fujitsu TTL chips, as those motherboards are infected with them.

But where to look. So much customs sections I don't know to identify

 

[Tailsnic Retroworks]

Well, repaired at last.

First thing I noted was the miscoloring of the background graphics/not visualizing the second background graphics layer, and an error in horizontal scrolling.

As I read, probably faulty custom in charge of these sections is 007781.

So changing it for a working one fixes this problem.

But I had a problem left to solve. Bad sprites drawing everywhere.

This error made me feel that the culprit was another custom, and indeed...

These 2 mother******* 2x 007786, completely broken. Replaced both and magic appears...

So in total, the graphic board had 3 broken Konami customs.

P.D.: don't throw away your The Final Round GX870 games, they are excellent donors for Konami Twin 16, xD.