Question on fixing a board

PrairieDillo

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So I'm looking to get a GI Joe board fixed and it seems to have some bad sound chips
Is it as simple as re-burning the chips from sound file files from a Mame Set?

Is there someone I can simply send the board to to get this fixed?

I asked Dick M to see if he could fix it and am waiting to hear back.
 

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The fact that self-test shows all sound ROM/RAM as bad indicates that the problem is more likely addressing or data bus related.

So I'm looking to get a GI Joe board fixed and it seems to have some bad sound chips
Is it as simple as re-burning the chips from sound file files from a Mame Set?

Is there someone I can simply send the board to to get this fixed?

I asked Dick M to see if he could fix it and am waiting to hear back.
 
Last edited:
Seeing as it's reporting both the Sound ROMs and RAMs as being bad I'd be looking at another possible cause - for example, is the sound CPU (a Z80) running?

I'd offer to fix it for you, but as I'm in the UK and you're in the US you may find the shipping somewhat prohibitive.
 
The fact that self-test shows all sound ROM/RAM as bad indicates that the problem is more likely addressing or data bus related.


I agree, it could be something as simple as a scratch across a few traces. Inspect the board and see if you can find any cut traces. You see this alot on boards that come out of warehouses since they are stored not so carefully and piled on top each other.
 
If the ceramic sound hybrid is bad you'll get those errors. It seems Konami routes some of the communication between the main CPU and the sound subsystem across the bottom side of that damn hybrid.

I've run into this once before. Look for corrosion problems from leaking caps on the thing or for cracks where it may have gotten hit.

RJ
 
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