Thanks for your replies. And thanks for the links btw75. i had read through the pinrepair guides already, but not the pinwiki ones, which I have now read as well.
To recap a bit of what I've done so far:
- I replaced the power supply with a new Rotten Dog power supply replacement. Since this is new, I obviously did not perform any ground modifications to it or other capacitor repairs mentioned in the guides
- I replaced the CPU with a Ni-Wumpf System 1 replacement. As noted in their manual that came with it, ground modifications are not needed for this new board, so I did not do them.
- The only thing that I didn't replace was the driver board. That appeared to be in good shape. However, since the game isn't working properly yet, and replacements are relatively cheap, I did just order a Rotten Dog System 1 Driver board replacement last night. I should get it in 2-3 days. I don't know that this will fix my current issues, but at least I will have the piece of mind that I've replaced all the boards with brand new ones that should be more reliable. In the mean time, I did add a ground wire from the driver board's negative lead of capacitor C1 to the backbox ground plane, as recommended in the guide.
- I bought a brand new replacement power supply to CPU board harness.
- I bought a brand new system 1 MPU to driver board harness.
- I re-pinned all of the rest of my molex connectors with new pins and new connectors. For the A1-J6 connector, I've re-pinned that twice now.
- I double and triple checked all of my molex connectors against the stock ones and verified that I have all my wires in their correct places.
- I verified that my score displays all light up ok, and do not appear to be blown or otherwise damaged via the instructions in the guide.
- I verified that the roll tilt switch and the slam tilt switches are both Closed.
- I tested all of my fuses with my multimeter for continuity and all passed.
- I checked the resistance of all my coils, all were above 2 ohms.
- I checked the bridge rectifiers in the bottom board. These were a little more difficult to test because the colors did not match up to all green wires as noted in the guide. But I believe that I did check them properly anyway.
- I did do the diode check on the coin door switch diodes, as eavedesian notes above.
- I did do a continuity check, as I noted in my previous post, for all the wires on the A1J6 connector, which all seemed to pass as I mentioned earlier.
- So then I started to focus on the ground wire. I put one pin from my DMM on the ground (pin 1) on A1J6, then I used the other pin from my multi meter to touch all the grounds around the entire game. I touched the ones on each button, slam switch, rollover tilt, each point on the ground plan, etc, everywhere I could find that was ground and each one tested fine for continuity.
So at this point, that's really all the tips I could find in the guides on what to check. My machine does start up, like shown in my previous video, and it goes into attract mode. But still, none of the buttons on the coin door work. So I can't add coins, go into diagnostic/service mode, or start a game. It's just a beautiful, flashy, useless pin once turned on. I am going to wait for my new driver board to arrive and put that in there. But to be honest, and I know I don't know a lot about this stuff, I don't really have a lot of faith that its going to correct this problem I'm having. I feel like I went through all the steps, tested everything I was supposed to, and replaced just about everything as well. So I really don't get what I'm missing.
If anyone has any tips for me, please let me know. I must be missing something obvious or just missing something due to my lack of experience here. So I'd appreciate any help anyone can offer me.