I intended to stop spending money and pursue this project maybe in the summer, and then the video converter I needed went on sale on black Friday and I ended up ordering everything I needed throughout the month of December.
I would have MUCH preferred to use an Arcade1up Mortal Kombat machine, both for the artwork and the built in games, but it's generation 2 and there are reasons I wanted to use a gen 3 machine so I used Marvel. The button layout for Marvel was more convenient as well.
I'll try to keep this short and skip the boring stuff. Decided to start with a Superman PCB since it was affordable and I have found memories of playing it at Chuck E Cheese.
Removed and replaced all buttons, joysticks, and wires. Not sure how it looks in the pictures but the joysticks aren't centered in the holes and there is a small visible gap on each because of the way the panel is drilled. They work fine and have their full range of movement, but i intend to try and find a solution for that. Wired a power supply that powers the JAMMA harness, and wired a power strip into a power switch on the backdoor, so everything inside is plugged into that strip
and to turn it all on or off I just flip the switch on the back. Did the same thing with the TMNT machine and Starcade. Wired everything into a JAMMA harness, which is what plugs into the arcade board. Took a little bit to get video working and stable but it's good to go now, only complaint is the box that converts from the board to my monitor won't boot automatically to an input, so I have to hit a button on the remote control everytime I boot up. Not a big deal though.
Audio took quite awhile but I had my big breakthrough the other night and it seems to be solid now. I need to clean up the wiring for it, but it works fine at least.
Bought a jigsaw and last night cut a hole in the back for the power switch and a big one in the front for this bad boy. I still need to mount it in firmly and it's not hooked up yet, but I like how it looks in the panel. When I tested it the 2p coin slot worked but 1p if its connected it just constantly sends the add coin signal and the game stops and flashes COIN ERROR. 2p did that at first but after running a couple quarters through worked fine, but no matter how many I ran through 1p it still was broke so that's on the to do list.
So it's at a pretty good usuable stage, with the todo list being big but nothing that had to be done to make it playable. I may wire a coin button to one of the unused buttons just for convenience until I fix the other coin slot. (Superman doesn't have a freeplay mode as far as I can tell).
So I'm really happy how this has come out so far. Especially given I failed so hard last year and broke a Captain America board. And now that I've got this working, in theory when I buy new games, as long as they're JAMMA (arcade wiring standard adopted in I think the late 80s) it should just be a matter of unplugging the old board and plugging in the new one with the JAMMA connector and basically be plug and play. Now if only Gauntlet Legends/Dark Legacy wasn't so fucking expensive.