KenLayton
In Memoriam
For a Series 1, why not hack in a Peter Chou video game power supply for just the +5 and +12 volt sections to the gameboard?
Bally Home Model replacement boards
- Thread starter HHaase
- Start date
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HHaase
Active member
Input voltages from the transformer are different, and the Series 1 has a 12v that the Series 2 doesn't have.
Similar enough though that I don't think it would be a long design process to follow up with a series 1 power board after I do the series 2 version. But will still need a different layout.
-Hans
Pinball Wizard
Well-known member
The thing is, it's either my 18v or 22v section that keeps burning tracesnoff of the board. I haven't had a chance to actually work on it, but a Peter Chou won't help me out with this.
KenLayton
In Memoriam
Probably you have a shorted diode, bad voltage regulator, or bad coil.
Lindsey
Well-known member
You should put a fuse on that circuit while you're at it. If you're burning traces I assume that there is either no fuse or an overrated fuse.
KenLayton
In Memoriam
The series 1 power supply had NO FUSES at all on the secondaries of the transformer. So all it takes is one shorted component on the power supply board or one shorted coil on the playfield to smoke the power supply!
The series 2 board I worked on had no fuse in the 18 vac winding. It had burnt traces on the board due to shorted diodes. In essence, the burnt traces became the "fuse" so to speak. Series 2 has circuit breakers mounted on the transformer box assembly. These breakers cover everything but the 18 VAC winding.
The series 2 board I worked on had no fuse in the 18 vac winding. It had burnt traces on the board due to shorted diodes. In essence, the burnt traces became the "fuse" so to speak. Series 2 has circuit breakers mounted on the transformer box assembly. These breakers cover everything but the 18 VAC winding.
Pinball Wizard
Well-known member
Well I got power to the CPU board and it is done too it seems... If playfield connections we're the same between series 1 and series 2, I'm ready to convert. I also have an interest in designing the CPUboard if you don't mind. Looking for a project for a little while now (as if I don't have enough) and I'm curious to get my game runni.
OP
OP
HHaase
Active member
Not much really to a design on the CPU board, it's a brutally simple layout compared to any other pinball machine. I was just going to duplicate the original for the most part, with only the LED displays needing any actual design work that I can find so far.
As to the power supply, here's what I've got for the Series 2 schematic. Moving on to the layout now.
http://www.siegecraft.us/pinball/images/bally s2 psu.bmp
-Hans
Pinball Wizard
Well-known member
Are you looking at making an identical replacement or reprogramming the game?
Lindsey
Well-known member
An original replacement is totally impractical for a number of reasons. The giant PCB, the impossible to find processors and unavailable game code are all show stopper.
Just my $.02
Pinball Wizard
Well-known member
That is my thought on it too.
OP
OP
HHaase
Active member
Huh, thought I had responded to this one already.... guess it didn't go through.
Like Lindsey said, there's a few things making it tough to consider an exact replacement. The big three are the nearly impossible to find processor, the size of the board, and the third being the need to re-engineer the LED displays. Series II boards are a lot more simple, and if I can find a source of piggyback processors the rest can all be worked around. Series 1 would likely have to be re-engineered, and again is dependent on finding those processors.
Not even looking into that at all until the power supplies are already rolling, which I am mostly over-complicating on my own end. However, here's the current schematic that I'm working with on them. The main thing holding me up is the capacitor values..... never did a power supply design before, and switchers are more finicky on capacitor choices. But it saves massive amounts of board area in just heatsinks as compared to linear supplies, plus all the usual benefits of less heat and power use.
http://www.siegecraft.us/pinball/images/bally s2 psu.bmp
If this works out, moving to a Series I power supply will be easy..... just add a 12v circuit. But will have to be a different board due to the voltage inputs and outputs being different.
-Hans
Like Lindsey said, there's a few things making it tough to consider an exact replacement. The big three are the nearly impossible to find processor, the size of the board, and the third being the need to re-engineer the LED displays. Series II boards are a lot more simple, and if I can find a source of piggyback processors the rest can all be worked around. Series 1 would likely have to be re-engineered, and again is dependent on finding those processors.
Not even looking into that at all until the power supplies are already rolling, which I am mostly over-complicating on my own end. However, here's the current schematic that I'm working with on them. The main thing holding me up is the capacitor values..... never did a power supply design before, and switchers are more finicky on capacitor choices. But it saves massive amounts of board area in just heatsinks as compared to linear supplies, plus all the usual benefits of less heat and power use.
http://www.siegecraft.us/pinball/images/bally s2 psu.bmp
If this works out, moving to a Series I power supply will be easy..... just add a 12v circuit. But will have to be a different board due to the voltage inputs and outputs being different.
-Hans
KenLayton
In Memoriam
Perhaps you could consult with Rottendog on this design? They've got pretty good design on their products. Plus, they have a large distribution network of dealers to get the completed products sold.
OP
OP
HHaase
Active member
Sorry guys, I just haven't had squat for time to work on this at all. Been way too busy with a lot of things over this summer.
I've still got my notes and some preliminary designs, but right now I'm going to officially say that I've shelved the project for the time being for a couple of reasons. I've got some other things I need to get done first that are more in line with what people have been asking me about, and that the market is bigger for.
I'll try to get back to the power supplies over the winter, but honestly the CPU boards just aren't going to happen any time soon.
-Hans
I've still got my notes and some preliminary designs, but right now I'm going to officially say that I've shelved the project for the time being for a couple of reasons. I've got some other things I need to get done first that are more in line with what people have been asking me about, and that the market is bigger for.
I'll try to get back to the power supplies over the winter, but honestly the CPU boards just aren't going to happen any time soon.
-Hans
KenLayton
In Memoriam
Any updates on a power supply board?
I've added some more information and photos to the pinwiki.
http://www.pinwiki.com/wiki/index.php?title=Bally_Home_Models
I've added some more information and photos to the pinwiki.
http://www.pinwiki.com/wiki/index.php?title=Bally_Home_Models
OP
OP
HHaase
Active member
Been dabbling with it, but haven't got anything solid just yet.
Given the size of the market, I'm actually considering sticking with linear regulators just for the sake of keeping the layout simple and easy.
I may also run it separately with the PSU and a separate fuse card, so that people can add a fuse card to existing units if they don't want to spring for a full power supply.
And if I can, I'd like to have a single board layout for the series I and series II, just stuff them as needed. That would be a huge cost savings for me in the long run.
Right now though all my funding is tied up in the Firepower EPROM adapters, once I get those kicked out the door I should be able to get moving on other ideas.
-Hans
Given the size of the market, I'm actually considering sticking with linear regulators just for the sake of keeping the layout simple and easy.
I may also run it separately with the PSU and a separate fuse card, so that people can add a fuse card to existing units if they don't want to spring for a full power supply.
And if I can, I'd like to have a single board layout for the series I and series II, just stuff them as needed. That would be a huge cost savings for me in the long run.
Right now though all my funding is tied up in the Firepower EPROM adapters, once I get those kicked out the door I should be able to get moving on other ideas.
-Hans
KenLayton
In Memoriam
I've added even more to the Bally Home Model pinball repair page at pinwiki today. Also edited it to be neater looking.
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KenLayton
In Memoriam
Someone has posted a youtube video of a new modern replacement Bally home model pinball main board:
http://www.youtube.com/watch?v=5wplyXb1yro
It looks good. I wish there was more information about it and pictures.
http://www.youtube.com/watch?v=5wplyXb1yro
It looks good. I wish there was more information about it and pictures.
OP
OP
HHaase
Active member
Definitely looks cool, but yeah not much info in there to see what's going on.
KenLayton
In Memoriam
My friend would order one of those replacement boards if he knew where to order it and how much it cost.
EDIT:
I found more information on this board. It is called, "Pinball Mind". Here is a link to technical information:
http://www.nightmarepark.com/Pinball Mind.html
EDIT:
I found more information on this board. It is called, "Pinball Mind". Here is a link to technical information:
http://www.nightmarepark.com/Pinball Mind.html
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