I am working on repairing a rough PCB marked as Konami Jungler, very similar to Locomotion but with some extra chips added in spots that are empty on Locomotion. I suspect I am working on an attempted Locomotion to Jungler PCB conversion.
The game boots with sounds but all the graphics are just large blocks or sparkly lines. I can coin up and play it basically blind. My CPU board has lots of bodge wires on both the top and bottom, with many chips having cut pins here and there. I was wondering if anyone could get close up pics of the top and bottom of the CPU board to confirm the bodge wires and cut pins are factory original mods?
The board originally was dead as a doornail, no reset signal to the CPU. I traced it down to a corroded trace underneath an LS138 at 1B that wasn't sending the HSYNC signal where it needed to go, which feeds all the V Signals that generate VBLANK that in turn generates the RESET signal. Now it has life but I can't get any sprites, characters, or background tiles to show up, just chunky blocks. All roms test good, all 6116/2128 ram tests good, all D2125 ram are all new and good.
Has anyone done a Locomotion to Jungler conversion? Is there a schematic for Jungler out there?
The game boots with sounds but all the graphics are just large blocks or sparkly lines. I can coin up and play it basically blind. My CPU board has lots of bodge wires on both the top and bottom, with many chips having cut pins here and there. I was wondering if anyone could get close up pics of the top and bottom of the CPU board to confirm the bodge wires and cut pins are factory original mods?
The board originally was dead as a doornail, no reset signal to the CPU. I traced it down to a corroded trace underneath an LS138 at 1B that wasn't sending the HSYNC signal where it needed to go, which feeds all the V Signals that generate VBLANK that in turn generates the RESET signal. Now it has life but I can't get any sprites, characters, or background tiles to show up, just chunky blocks. All roms test good, all 6116/2128 ram tests good, all D2125 ram are all new and good.
Has anyone done a Locomotion to Jungler conversion? Is there a schematic for Jungler out there?
