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- By: Taito
- Released: 1987
- Display: Vertical (upright)
- Pinout: Custom
- CPU: MC68000
- Players: 2 (simultaneous / co-operative)
- Identifying Marks: Triple-decker PCB.
- Got this one at the same time as Golden Axe, good game.
- Screenshots: PCB
- When I recieved this one, I was happy that it WORKED, however,
it did have some graphic errors. The title screen had some ugly orange
pixels on the name, and some characters such as '0' had erroneous pixels
in them. By running the game with one EPROM removed at a time, I was able
to narrow the problem down to likely being EPROM-4. I checked EPROM-4
against a copy I downloaded from the 'net. Unfortunately, they matched.
This means, the EPROM itself is OK. I checked all the others, and they all
were OK. So, I looked back to EPROM-4. There must be a problem around it.
I checked POWER and GROUND (see my lesson learned fixing
Cabal). All's well. All signals checked-out.
I flipped over the board and looked at the bottom closely, and noticed
it looks like a screwdriver or other pointy object had been dragged across
a small region of the board. Its path took it over two solder points which
were close together. The solder had been flattened on one point, and squished
in the direction of the other. There was a small chance they were actually
making contact. I cleaned it up, and the graphics cleared up. It was hard to
spot, but I found it, and am now happy to have a Twin Cobra running in
perfect condition :-)
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