Mvs Cross hatch of dead ?

J

Jarryson

New Challenger
Joined
May 30, 2016
Posts
54
I have this board, MV1A, which boots fine without cart, I can do all test.

With Neo Diag bios all tests passed.

With game cart inserted, I have this: (game samurai shodown 2)

rc53eu.jpg



What is failing ?
 

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J

Jarryson

New Challenger
Joined
May 30, 2016
Posts
54
Yes, I have tested all my games and the result is the same. Any game have sound or graphics. In test mode all works, sound, texts, etc.

I dont see bad traces, board is in very good state.

I have socketed Vrams (SNKA and SNKB) but I havent replacement for them.

Replaced Work rams also. Board and daughter board reflowed.

Neo-Io replaced.

No effect.
 
Last edited:
Xian Xi

Xian Xi

JammaNationX,
15 Year Member
Joined
Dec 1, 2005
Posts
27,750
Jarryson said:
I have thought the same, but what chip? Neo-GRC or Neo MGA-T ? I have replacement for both chips.
Click to expand...

It might just be the interconnect between the top and bottom board. I'd try a new one first before trying to swap fine pitch flat packs.
 
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