I've come across a 007 Slot Machine, by Takasago (same one pictured in the database: https://www.pachislodb.com/database-5621.html ). I believe I'm having an issue with the coin mechanism and I'm not quite sure where to start troubleshooting. Currently, the machine powers on and lights up. When I put a coin in, it always falls right back to the payout tray. Here's what I've tried so far:
Taping the flap (not sure on terminology) closed to force the coin to the hopper, no result.
When I received it, the coin mechanism was unplugged from the board. The previous owner has no experience or records of it and only used it as a show piece.
Changing the key position on what the PDF manual ( https://www.pachislodb.com/manuals/Takasago.pdf ) says is the "Setting key", this turns off the blinking lights and the "Hit Count" displays "6".
Powering off and on again, no result.

Any advice or tips would be appreciated! I have worked on IGT machines in the past, as well as arcade games and general electrical troubleshooting so I've got tools available