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Bally 1969 On Beam restoration

drumsticksplinter

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Jan 15, 2024
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United Kingdom
Alias
Drumsticksplinter
Hi all, starting this thread as a progress log for my newly acquired em pin.

I’m completely new to pinball, but been wanting to own a machine for around the last 20 years. I finally got the opportunity to get hold of a nice old machine that could do with some tlc.

IMG_0673.jpeg

Physically, the machine is intact and serviceable and upon power up it sprung into life briefly before the smallest amount of 🔥 and smoke stopped all the fun….

Cosmetically, the cabinet is heavily nicotine stained, but mostly original with some battle scars. The playfield artwork is beautiful but worn in places, requiring some touch up. The back glass is in lovely condition with only some small chips of paint missing.

I have mulled over what the next steps for this machine should be and given that all of the rubbers are missing and or perished and some plastics are damaged, i would have to replace these to get the table working. I feel that given the cosmetic and mechanical condition, it’s got to be a quite intensive restoration job to do the machine justice.

I have started by stripping all the hardware off the playfield and cleaning the surface lightly but enough to remove the nicotine stains. It will need touching up, but I love the design of the original artwork.

I aim to get to the cabinet wiring next to find the cause of the fire, it seemed to be around what I think is called the “beam unit” a feature specific to this machine.

That’s all for now 👍

Ads
 
Hi all, starting this thread as a progress log for my newly acquired em pin.

I’m completely new to pinball, but been wanting to own a machine for around the last 20 years. I finally got the opportunity to get hold of a nice old machine that could do with some tlc.

View attachment 248598

Physically, the machine is intact and serviceable and upon power up it sprung into life briefly before the smallest amount of 🔥 and smoke stopped all the fun….

Cosmetically, the cabinet is heavily nicotine stained, but mostly original with some battle scars. The playfield artwork is beautiful but worn in places, requiring some touch up. The back glass is in lovely condition with only some small chips of paint missing.

I have mulled over what the next steps for this machine should be and given that all of the rubbers are missing and or perished and some plastics are damaged, i would have to replace these to get the table working. I feel that given the cosmetic and mechanical condition, it’s got to be a quite intensive restoration job to do the machine justice.

I have started by stripping all the hardware off the playfield and cleaning the surface lightly but enough to remove the nicotine stains. It will need touching up, but I love the design of the original artwork.

I aim to get to the cabinet wiring next to find the cause of the fire, it seemed to be around what I think is called the “beam unit” a feature specific to this machine.

That’s all for now 👍

Ads
Good luck, a worthy project indeed. Following with interest 👍
 
I would imagine the smoke is a locked on coil.

More info on the machine here

There's a schematic on that site that you can download.

Good luck, I'm working on my first EM just now and really enjoying it.
 
I would imagine the smoke is a locked on coil.

More info on the machine here

There's a schematic on that site that you can download.

Good luck, I'm working on my first EM just now and really enjoying it.
Yup, also I found smoke can be high voltage arcing between switch blades, melting switch stack materials if the insulation in the switch stack has perished. This one was from the reset relay in a Bally backbox.IMG_20230801_091135281.jpg
 
Yup, also I found smoke can be high voltage arcing between switch blades, melting switch stack materials if the insulation in the switch stack has perished. This one was from the reset relay in a Bally backbox.View attachment 248692
Thanks both, I haven’t got this deep into the machine yet, I will remove the playfield next and dig out the innards so they are accessible, I think I’ll find some evidence of the culprit once I’ve got into it.

Will get some pics of what I find. :)
 
So, I’ve taken off the playfield and raised the main cabinet electrical board so I can get a better look, safe to say it was dusty as hell…

There did indeed seem to be a coil that was stuck on the space station unit, I pushed it back and tried the power on again… no smoke 🙂 I’ve got the score motor turning over and over at the minute. I need to get the schematic printed as its hard to follow as a digital copy. I think I’ll investigate the reset relay first as this seems to require all of the score reel units to be zero and open circuit amongst other things, this looks to drive the score motor when energised.
 

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If you have a digital multimeter, you can use it to quickly test the resistance of your coil in the space station unit. On the lowest resistance test value you should hope to be getting a reading above zero for now. Later it's possible to look up the coil type on the schematic and then understand what the right reading should be, but zero = knackered.

If the game was working before the smoke, it's likely only a very small problem keeping that score motor turning so no major changes, work slowly and methodically. Make a note of everything you do.

As it's old, it's likely dirt is an enemy for you and any dirt or rubbish can stop a contact being made and stop it working. So as boring as it sounds cleaning and checking everything slowly, gently and carefully is likely the order of the day.

Take some time to get to know this site...there are others too but my phone seems to have this as a popular one I have used in the last few years. https://www.pinwiki.com/wiki/index.php/EM_Repair
 
In addition to cleaning contacts removing any pitting I would strip and clean the mechs e.g. stepper units, score reels. Clip a couple of windings off any springs that need it.

These guys seem to know what they are doing

https://youtube.com/@goatshedempinballrepair8545?si=GAbiFevBxlTCK_3b

I've been using a Dremel with a brush attachment to clean contacts on their recommendation and it works really well, I've used both flexstone file and points file and Dremel gets the best results.
 
In addition to cleaning contacts removing any pitting I would strip and clean the mechs e.g. stepper units, score reels. Clip a couple of windings off any springs that need it.

These guys seem to know what they are doing

https://youtube.com/@goatshedempinballrepair8545?si=GAbiFevBxlTCK_3b

I've been using a Dremel with a brush attachment to clean contacts on their recommendation and it works really well, I've used both flexstone file and points file and Dremel gets the best results.
Is this the kinda thing you mean Chris @crsedgar


Stew
 
Not quite Stew, smaller heads, this was the bundle I bought albeit I only use the smaller broom like heads.

48 PCS Brass / Stainless Steel Wire Brush Wheel Set, Mini Wire Brush Wheel Cup Brush for Power Rotary Tools Polishing, Cleaning Metal Rust, Drill Attachment Bit Set 1/8 Inch(3mm) Shank https://amzn.eu/d/3S0LUJ4
 
I have tested the coil that got a touch warm and indeed it rhymes with cooked. Will need to get a replacement for that.

As I was checking some of the mechs I noticed the “Add A Ball” unit was not stepping down as it should, tried to add a bit more tension on the spring, but the mech was all gummed up so decided to strip it and clean the whole thing. Wasn’t too bad to disassemble, apart from the Philips head screws holding the solenoid brackets, these must have been tightened by the hand of Thor!
 

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I think I’ve found why the add ball unit wasn’t stepping down… don’t know what the part is called, so I’m going to refer to it as an escapement, basically the arm that returns the stepper to zero but only one step at a time, the solenoid plunger was seized to its pivot pin, it was still barely moving because the pin was moving in its pressed mounting, but causing it to not reliably step down each time. A bit of persuasion and it was freed up, then cleaned.
 

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Cleaned the mech up and given the moving parts a tiny bit of 3 in 1 fine oil, steps up and down well now 😊
 

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Regarding the score motor running over and over, I did some investigation and couldn’t find anything locked on that would keep it running, the only thing keeping it in was a contact on the motor stack itself, the switch stack was not set high enough to ever allow the switch to open, regardless of which position the motor disk was in its rotation. I have added a small spacer under the stack, which now allows the switches to open once the follower reaches the low spot on the motor disk. This stops the score motor running on and on. I can’t yet figure out why it was like this in the first place as it doesn’t seem like it’s something that could have changed with wear / age.
 

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I was told by a high end restorer that this was one of the hardest machines he’d ever got going again. Fortunately after I sold it to him!😉Apparently they have quite a difficult relay system to light the sequences for the back glass and the motor in these relatively irreplaceable if broken. There’s another game with a similar motor based on an Egyptian theme from memory. Good luck
 
I was told by a high end restorer that this was one of the hardest machines he’d ever got going again. Fortunately after I sold it to him!😉Apparently they have quite a difficult relay system to light the sequences for the back glass and the motor in these relatively irreplaceable if broken. There’s another game with a similar motor based on an Egyptian theme from memory. Good luck
Thanks for the heads up, I’m sure it will be a challenge getting it up and running 100% but I’m lucky I’m not in a position where time is money in this scenario, I get the most enjoyment out of the restoration journey in most of my hobby ventures.
It’s my first pinball, so I don’t have anything to compare it to, but the 2 motors look pretty intricate imo. Thing is almost anything can be fixed given the time and inclination, I don’t have either of those things in abundance but try to do what I can when I can.

I think I’ve seen “king tut” mentioned along with on beam… possibly the same year of manufacture?

Thanks
 
Good for you. Here are a couple of v.good EM pages that I’m in and suggest you join. One is predominantly in the States and the other is an Australian group run by a couple of us ‘Old Boys’, Kim & Graham who just do EM and often make good videos about stripping down components etc . If you do join post an intro so they know what you’re working on and try and keep any questions concise and specific with photo’s if relevant. If you want to contact me by PM let me know where you are, as I have also a couple of contacts in the U.K. who would help you via phone too. Guys on here are mainly SS, which is great if you’ve got those but these sites will definitely expand your pool of knowledge. Good luck. Keith
 

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I presume you’ve found this page too? Very helpful http://www.pinrepair.com/em/index1.htm
Cheers Keith!

Found those guys on YouTube, some really helpful and detailed videos from them, which will definitely save hours of head scratching.

Thanks also for the pinrepair link, some time and effort has gone into making that essential repair bible!

I’m based in Staffordshire and I have tried to find places to just go and play pinball, but haven’t found anywhere near to me. Seen Tilt in Birmingham, but I’m yet to visit.
 
Cheers Keith!

Found those guys on YouTube, some really helpful and detailed videos from them, which will definitely save hours of head scratching.

Thanks also for the pinrepair link, some time and effort has gone into making that essential repair bible!

I’m based in Staffordshire and I have tried to find places to just go and play pinball, but haven’t found anywhere near to me. Seen Tilt in Birmingham, but I’m yet to visit.
Tilts good but like most of the arcades they have SS machines which are obviously a different ball game. If you want to explore SS with a smattering of EM’s the go to Pinfest24 in A gust. It’s Daventry,Northamptonshire (my County) and apex 20 mins from J16 M1.
Once you’ve ‘mastered’ On Beam😉,and if you have room, buy a ‘Bally Bingo’ machine and prepare to die internally!😂 A very niche market as there specific to an older generation ie me who played them in the 60’s but amazing Computers in the true sense of the word. It’s actually Ozzie Grahams specialist subject.
Check out the internals of this one😩
 

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Tilts good but like most of the arcades they have SS machines which are obviously a different ball game. If you want to explore SS with a smattering of EM’s the go to Pinfest24 in A gust. It’s Daventry,Northamptonshire (my County) and apex 20 mins from J16 M1.
Once you’ve ‘mastered’ On Beam😉,and if you have room, buy a ‘Bally Bingo’ machine and prepare to die internally!😂 A very niche market as there specific to an older generation ie me who played them in the 60’s but amazing Computers in the true sense of the word. It’s actually Ozzie Grahams specialist subject.
Check out the internals of this one😩
Wow! 😮 those machines are something else, I think it would be a while until I could attempt something like that! Amazing electro mechanical artefacts though.
 
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