(Topic ID: 189069)

1959 Golden Bell(s) mini-restoration

By desertT1

6 years ago

Topic Heartbeat

Topic Stats

  • 17 posts
  • 9 Pinsiders participating
  • Latest reply 6 years ago by desertT1
  • Topic is favorited by 2 Pinsiders


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Golden Bells Schematic.pdf (PDF preview)
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#1 6 years ago

I got this machine from a friend who wasn't looking for this level of project. I've already cleaned and cleared the playfield (not the best of jobs, but it's smooth and passes the 5 foot test) and am now putting things back together. The game didn't work when I got it and he got it from a storage situation, so if I made anything worse, I wouldn't even know at this point.

So, the PF is cleared and back in the cab and everything I unsoldered to have a flat surface has been soldered back in place. The only burnt fuse was the 6V, 15A one. Replaced that with the closest thing available, which was what had been in there before and was blown (32V, 15A). The right slingshot coil locked on upon power up and manually activating the lock relay. Tap the bottom of the cab (cool feature) and see that one of the slingshot switches are touching, but not at the contacts. Fix that and that no longer locks on. I have a new relay coming, but will manually activate for now to identify trouble spots.

When the game is powered up there are two things I am currently noticing. The first is the 10,000 stepper is constantly running. The second thing is I am still hearing the hum of a locked coil. I ID that coil and tap the game off. The 10k stepper gear thing isn't spinning freely at all. Take that apart, clean it, reassemble and now it's acting proper. Power the game up, and it still spins and spins. I don't let it do this for more than a few seconds so the locked coil doesn't fry, but I have powered up a few times, so it should have found home by now. It's a continuous stepper, so no switch. Still a mystery, but likely related to something else at this point.

Now, the real question I have at this point is the "Selection Unit" stepper under the back left section of the playfield. It's locked on and I can't figure out why. It has a single coil and a switch on one side and the expected grid of wires on the other side. It's locked on, but with a name like "Selection Unit" I have no idea what it's related to. There are no schematics for this game that I found, but a Ten Spot schematic (http://mirror2.ipdb.org/files/2517/TenSpotSchematic.pdf) shows it doing to several "1 to 10 lite relay" tags. Curious if mine does the same. Either way, anyone have any ideas why it would be locked on?

#3 6 years ago

See that wire in the bottom center of the pic? Yeah, it's supposed to go to the bottom of the relay, as you can see on the 100k unit to the right. Fixing that seems to have fixed the 10k stepper going non-stop.

Now to find out what is causing the "Selection Unit" to lock on. I found a relay locking on. The Advance #2 relay fires up whenever the game is turned on. I unsoldered the coil and powered up the game and the Selection Unit does not lock up. But, I'm looking at the Advance targets (they look like pop bumpers, but are a switch only, no metal ring) I'm not seeing any closed switches. However, the relay for #1 does not ohm out the same that #2 does. One of them was ~42ohms and the other was ~13 ohms. Not 100% sure that is accurate for either because I think the batteries are starting to go on the DMM and it does funny stuff when that happens. Anyone have an M-31-1700 coils they want to measure for me?

#4 6 years ago

I found a switch stuck closed on a target along the right side, which is what had locked on the relay, which locked on the Selection Unit stepper coil. Now I power the game on and the reset motor spins over an over and the 10k stepper in the head is back to cycling non-stop. Researching now, but lost on this yet again.

Also, you are supposed to be able to turn the game on by pressing the left flipper button. That doesn't happen on mine. If I press the lock relay flap with a tool it turns on and stays on, but I obviously don't want this to be the way things work. Any advice here would help.

#5 6 years ago

Flattening plastics with a heat gun and a few sheets of glass.

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#6 6 years ago

According to the schematic you posted there is no left flipper button to turn on the GI and energize the lock relay. The only paths are through the coin relay or 25c relay.

#7 6 years ago
Quoted from dr_nybble:

According to the schematic you posted there is no left flipper button to turn on the GI and energize the lock relay. The only paths are through the coin relay or 25c relay.

Well what do ya know, I put the 1959 nickel (fitting) in that came with the game and it fired right up. Still have a closed switch causing a stepper to lock up, but that's a pretty nice piece of info.

I will try to find the stuck switch tomorrow and see how far the nickel gets me then.

#8 6 years ago

Nice job flattening that plastic! I find that those games from the 50's and 60's have pretty thick plastic and are a tough to flatten. I totally failed once using the oven trick on a set of thick plastics....I like the heat gun method better too!

Hope you get some pics and video of yours working! Here's a video I found and I think all the clicking is coming from the video camera...odd!

#9 6 years ago

You mean Pinball Resource did NOT have the schematic?

#10 6 years ago

Buy the schematic and post it to IPDB. That will make it much easier for us to help you.

#11 6 years ago
Quoted from dr_nybble:

According to the schematic you posted there is no left flipper button to turn on the GI and energize the lock relay. The only paths are through the coin relay

That is true for WMS EMs
my 1963 WMS Big Deal only powered up if you coined it up.
Not sure when that changed but was probably in mid 60s
changing to the left flipper (power on switch).

3 months later
#12 6 years ago

Got a schematic and took it to get scanned yesterday. IPDB is based out of Houston and has been affected, but I will submit this to them once things are a little more calm.

Golden Bells Schematic.pdfGolden Bells Schematic.pdf

#13 6 years ago

Nice Scan!!! Where did you get it done?

#14 6 years ago
Quoted from HowardR:

Nice Scan!!! Where did you get it done?

Larger print shops that deal with blueprints & such can do these easily.

1 month later
#15 6 years ago

Are you still looking for a backglass scan? I can't PM anymore

#16 6 years ago
Quoted from ArgosySK:

Are you still looking for a backglass scan? I can't PM anymore

Only because you're not verified!! Eazy-peezy to do.

#17 6 years ago

A scan would be great after you get verified. I did it a while ago and only remover it being fairly simple to do.

I finished a major 1977 Bally Lost World repair recently, so my two EM projects are about to go back to the top of the repair list.


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