I recently bought a Williams OXO 1973 EM Pinball Machine and I am having an issue with the score resetting and possibly credits as well. When I turn the machine on (with all scores at a random value) it will turn on the motor inside and attempt to change the scores but then gets stuck (NONE of the reels seem to even try to spin). Even when I manually set everything to 0 it will not get stuck but then it has some sort of strange problems with trying to put in credits and it looks broken (credit switch). I don't want to dive into doing stuff before I get a good grip of the actual problem because from experience that leads to more problems. I am very new to this because it is my first Pinball project but I am capable of things like soldering and working the mechanics inside. That being said I am sorry if I miss key details of the diagnosis, just tell me if some info/pics are needed.

Thanks in advance.

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No I am in Colorado

Quoted from dr_nybble:

First, I wouldn’t worry about the coin switches right now. Just add credits to the credit unit by manually activating the plunger. Consult www.pinrepair.com/em to see how to set your game to free play.
If you look at the schematic, you’ll see switches on the score motor labelled “pulses score reset relay”. Those should energize the reset relay 5x for each score motor revolution. So first, find the reset relays and see if they are energizing when the score motor runs. If you look in the instruction manual, they are M29-900 coils in the backbox (they call it INSERT). Report back whether they are energizing. They look to be the coils in the bottom left of the backbox in your photo.

The coins are not energizing.
Even when the scores are all set off of 0 and the game is turned on the motor will not start spinning. But then if I try to out in credits manually the motors will spin for a second and then stop without achieving anything. If I press the start button nothing happens either. I tested the coils while pressing start and just on startup and they are not powered on. I am confused as to how I set it on Freeplay even after looking at what you sent.

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New updates...

Update: I went and had a look at the Jones connectors and fixed them so now it tries to reset but certain reels won't reset. Is this a problem with the switches being clean? The image below is the one that will click and try to move but i believe the switches are dirty and are not making a connection. I will also add an image of the numbers that dont change.

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Same problem applies but I tested the switches with a multimeter and they seem to work so it is not the switches.

Bottom left reel just had a corroded connection.

The only ones not working anymore are the top 2 reel sets that don't get any power.

Like I said I believe all the switches work but I don't know why the reels on the top don't get power. I checked the relay and it is giving power but the power doesn't seem to make it to the top reels.

It is all of the top reels in the picture with 1's instead of 0 but not the other bottom 1 that said 1 because that was just a bit corroded.

If i change all the numbers manually to random numbers other than 0 the bottom ones will change to 0 but the top ones stay the same.

Yes that part does work and the switch in the back will start clicking a bunch but the top reels don't spin with it. I checked the voltages in the switch in the back and those switches are also activating. I think there must be a problem between the wire going from the switches in the head to the top reels in the head from what I have seen. Do you suggest I check if the wire breaks anywhere by trying to follow it? The problem is that the switch in head is giving power and working but something between there and the top reels causes the top reels to get no power what so ever.

Update 2: After using alligator clip jumper wires to make the relay in the head move (I thought the one moving was the one that controls the top reels as well but those ones were controlled by the relay next to it that was not getting power). Now I am at a point where I can turn the machine on and press the play buttons and try playing but there are still a few problems.
1.) When you put multiple credits in and press play 4 times it still plays like it was in single player.(might be because of problem 3)
2.) The OXO board in the middle of the game doesn't reset (might be because of the next problem)
3.) You have infinite balls and it will forever stay on ball 1
4.) I have a problem with the flippers being weak and one doesn't even go all the way up
*If anyone can send a schematic/image of how the jones connectors are supposed to be in the cabinet I would like to check they are all correct

No

Thank you this video is just what I was looking for. The machine I have is almost an exact copy of the one in the video (its a diffrent game but internals are practically identical). The series on fixing his em is basically exactly what I am trying to do so the step by step going through and fixing it is very usefull.