You might want to check those EOS switches on your drum units (score reels) too....looks like they break the 10 pt relay circuit. Is your 10 pt relay locked on as well?

Make sure not to leave the coil locked on too long - those chime coils will get hot fast!

Well, the 50 pts you get is just the 10 pt relay getting 5 signals to fire as the score motor turns. It looks like your 50pt relay is not locking on, so I'd look at that 10 pt relay that's probably in the head. See if that relay locks on. If so, you'll have to figure out why.

Playfield switches and EOS switches on the score reels might be good suspects.

You can try pounding on the playfield with your fist in different areas to see if that sets off a switch that's gapped too closely. Don't forget to look not only at the switch contacts, but below them at the solder tabs too, to see if something's not right there.

If it's not a playfield switch keeping the 10 pt relay locked on, then you have to look at a schematic and figure out what breaks the circuit to a 10 pt relay once it's turned on. You say you've adjusted the score reel switches and now they're working correctly - that's good. But did you look at the EOS switch on the 10's reel? It's in a different location than the other switches. It should be closed until the plunger gets pulled all the way in, then the plunger should push one of the leafs until the switch opens, breaking the power to the 10 pt relay, at which point a spring pulls the plunger and the score reel and moves it to the next position.

I'm guessing that switch isn't opening for some reason. Hopefully it's something you can see visually.

Well, you still have a couple things going on. Obviously, your 1000 pt relay is firing steadily - but not stuck on like your 10 pt relay was, so likely a different problem. Although, since it began after you worked on the EOS score reel switches, I would look again at the one you adjusted and make sure it's opening and closing correctly - but to be honest, an EOS switch won't cause that behavior - it's just curious that it started after you adjusted a switch. Could you have bumped or bent something close by while you were working on that switch?

If you have a schematic, look at what makes the 1000 pt relay fire. I do hear your score motor running constantly too, but I don't know if that's a cause or a symptom yet

Also, when the 1,000 pt score goes past "9", the 10,000 score doesn't increase. That's most likely another switch problem in the score reels. There is a switch on each score reel that closes when the score reel gets to "9" - it's open at other times. Look closely at that switch and make sure it's operating correctly. You can compare it to the same switch on an adjacent score reel if you have one that's working correctly. Look for broken solder joints up there in the score reels also - a loose wire that's just hanging out there.

Look at the attached photos. I would go through each score reel and clean all the switch contacts, look for broken wires - carefully examine them and make sure as you click the score reel around with your finger (by pressing the plunger all the way in, then releasing it), that the switches open and close when they should. I know there are 16 score reels, which makes 64 switches, but they all have to work correctly for the game to work.

Start there and good luck!
William score reel switches (resized).jpg

Williams score reel advice (resized).JPG

I just re-read your post #13 and you said that you "adjusted the contacts for the bonus spiders contact board, which I saw was a little crooked and now something is happening".

That might explain the constant 1000 pts being added. Bonuses are usually 1000 pts. So you might have adjusted something incorrectly on whatever mechanism gives you the bonus (sorry, I'm not completely familiar with this game). Look there for the 1000 pt problem.

You still have a separate problem with the 9 position switch on your player 1 1000 score reel not closing, I think.

Man, I'm sorry - I've got to stop replying to these things so early in the morning! Looking at the video, your bonus is stuck at 6000, then eventually you hear a clink and it goes to 5. The problem is the mech that increases and decreases your bonus count. It's not moving easily. I don't have a machine in front of me, but that mech (like all mechs) should move up or down cleanly and easily each time one or another solenoid is fired on it. I imagine there are 2 solenoids on that mech - push each one in with your finger and release it quickly - see if the mech rotates one position each time. I'm guessing yours doesn't.

The other posts I put up are good general information, but probably not relevant to you right now, except that you may still have an issue with your 9 position switch on the thousands reel.

Thanks EMsInKC for catching those drawings if they're wrong. I don't have a Williams machine nearby to check them. I'll get rid of them to avoid confusion.

Thanks for catching that rolf and EMs - I work mostly on Gottliebs, so sometimes when I try to help folks on other machines, I'm winging it a bit. I'll keep that photo from the manual instead of what I had, rolf. Still can't believe I found something on the internet that wasn't true...Sheesh! What's the world coming to??

I think we're all in agreement that the op has a bonus unit problem. He says it moves freely when he manually works it, so it must be a problem with getting a signal to fire - either not getting a signal, or too short a signal to complete the ratchet movement on the bonus unit?

I've attached a photo of the 2 circuits that I think would be involved. If I'm understanding the schematic correctly, it looks like both the upper and lower circuits I've marked in red have to work together to get the bonus unit back to zero. In the lower circuit, there's a lock-in switch in the center path labeled "BONUS RE." that would stay closed once the Bonus Relay gets power until the switch on the left in series with it (BONUS UNIT OPEN AT "0" POS. SW.) opens, which will happen when the bonus unit rotates back to zero. If the Bonus Relay isn't firing, that Bonus Relay switch in the upper circuit won't be closed, and the Bonus Unit Reset coil won't fire.

I'd probably look very carefully at that switch on the left - "BONUS UNIT OPEN AT "0" POS. SW." which is on the bonus unit. If that's good (closed at every position except zero), I'd look very carefully at all the switches on the Bonus Relay. Maybe the op could watch the Bonus Relay and see if it's locking on during the reset process.

Again, I'm doing this before my first coffee - hope I'm not leading anyone astray.
bonus unit circuits (resized).jpg

In the schematic snippet I posted in #24, maybe you could look at that motor switch in the upper left corner - Imp-C. Make sure the contacts are clean and making good contact for a long enough time when the switch closes, which it will do 5 times every time the score motor turns. Also, look at the Bonus Relay switch circled in green in the same circuit...check those contacts the same way. If those switches aren't closing long enough, you might have the bonus unit reset relay not getting a strong enough signal to fire reliably.

If you're having a physical problem with the bonus unit not firing cleanly in one position, you'll have to observe it carefully, try to figure out what's different in the two positions, and see if you can change it to work. I'd probably start with cleaning it and lightly lubing the metal-to-metal parts of it. If those units are clean and moving freely, the position of it shouldn't matter.

If you take another video, could you set the bonus to about 10,000, then start the machine and let me watch either the bonus lights going down all the way, or bonus unit itself chugging away. It was hard to tell what was going on in that last video.

That's all I've got for you.

Hey, Alex - great to hear you've got it sorted!! If you're talking about those small white cylindrical spacers between switch leafs, they are made with a nipple on one end - that nipple should fit into a small hole in the switch leaf and then with a soldering iron or something, you melt the nipple so that it spreads out and holds the spacer in place. If it's just sitting in there without actually being attached, it will likely fall out again eventually. You can buy the spacers at PBR. I made one out of a wooden dowel one time...*laugh*

Anyway - congrats! Now have fun playing the machine!