Alright so the last month was a mix of cleanup and reassembly. Thank you nick for the polishing tools you can have them back now/show me where in the space they are stored and if you need a new polishing cone I can get one.
-The glass was cleaned and retaped.
-The upper and lower door sections were aligned and bolted together.
-The door was reattached, shimmed and adjused to align squarely.
-The chrome sides have been reinstalled.
-The pay glass frames had completely lost their chrome and were stripped and repainted.
-The reel glass chrome has been reinstalled after a few adjustments.
-The coin plate has been reinstalled.
-The fluorescent lighting has all been relamped and reinstalled. Needed two new FS-2 starters.
-Initial power testing was performed.
-One fuse holder was missing. It has been replaced
-The coin lock-out arm has been made by copying the one in my other machine at home.
-The coin lock-out solenoid has been continuity tested, then reconnected.
-The coin head has been adjusted and installed. Quarters now fall into the correct paths.
Over the last long weekend because this machine has no wiring diagrams available I sat down and drew point-to-point wiring diagrams so I could figure out where all the wiring went.
Current status is:
-Needs new #55 bulbs. They are on order.
-Needs new #64 bulbs. They are on order.
-Needs new fuses. They are on order.
-Figure out why it blew its two low voltage fuses between an initial test and a later check. They are slow-blows that had non-eventuful failures like they overloaded.
-I'm missing a cam lock for the door. I believe it wants a 1 1/8" lock and on hand I only have 1/2" locks. Need to pull the lock from my other slot machine and ask Browns as The Home Depot also only sells 1/2" cam locks.
-I'm missing the coin tray still
-I need to purchase tokens. I think I need to purchase 0.900" tokens. I need to double check because I think the coin head will not accept 0.984 For reference, 1000 0.984's are $100 shipped
-I need to buy a token mech for whichever size token I select. These are about $30.
-There's still a bit of purple paint on the top chrome meter windows. Just need to unbolt and scrape it off.
And...
-The CPU still needs to be tested. Oh god this thing has been a nightmare.
So the CPU on this is very very simple. It's an MCS-48 Microcontroller developed in the 70's. It's a tiny amount of ram, two EPROMs, though I've seen slot machines only need one, an I/O expander and both optoisolators buffering the inputs from the machine and high current transistors working with even higher current transistors behind the display glass as darlington pairs. a battery keeps the tiny amount of static ram alive when the machine is turned off.
I ahve already cleaned up the board and replaced all the sockets as some of them were not looking great and now it is waiting on a 5mhz crystal which I had fall off. Once that is done the (bad kind of) fun starts.
Theose EPROMs are a mystery. While this is a Bally cabinet the CPU is something totally non-original and 40 years old. One EPROM has seemingly dumped okay and looks to contain valid data. The other I've been unable to dump. Either it's full of no data or scant bytes that don't make a lot of sense. This is either the EPROM failing, bitrot or my EPROM programmer is not holding up its part of the deal when it comes to reading back old chips. I do not have a source for EPROM images, especially for this machine or the game theme. This may very well hang up the entire project if I fail to get the CPU working. The nuclear option because this is so simple is to replace it with an Arduino, but I absolutely do not have the skills to develop that.
Also the empty boxes with handles are free for anyone. They are really nice boxes.