Galaga power supply question #100,000

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Galaga power supply question

So last night I took the power supply (the one with the transformers) out of my galaga upright.

I notice that the game also has a power supply PCB.

I had to cut some wires off the power supply, as they were soldered.

If I get a switching power supply, would the wires from the harness that was soldered to the power supply and also the wires going to the power PCB both be connected to the new switching supply?

I see arcadeshop has an adaptor that looks like it would take the wires connected to the power PCB, but what about the wires soldered directly to the power supply? I assume those wires run the monitor and the marquee and so forth.

Thanks
 
I think i have some of it figured out -

the switching power supply would do the job of the power supply PCB but the old power supply brick is needed for the other stuff. Correct?

Which sucks because the wiring is completely fubar due to prior hacky type repairs, and i don't feel like goofing around with it.

If I use a happ monitor with its own power cord, how can i power the remaining AC stuff like the marquee?

What else is AC?

Thanks
 
Galaga

I have a working harness, Transformaer assembly and pcb powersupply for a galaga if you are inyerested. Or

You will still need a line filter no mater what you do as far as the switcher. Also a couple of fuses. The monitor, Marquee light, PCB powersupply, and the coin counter is all that work off of AC in Galagas.
 
I have a working harness, Transformaer assembly and pcb powersupply for a galaga if you are inyerested. Or

You will still need a line filter no mater what you do as far as the switcher. Also a couple of fuses. The monitor, Marquee light, PCB powersupply, and the coin counter is all that work off of AC in Galagas.

This is the way to go
 
Put an original harness in it. If the connector that goes to the power supply has burnt or has tarnished pins, and this is the same connector that will connect to the switcher/adapter, you'll need to replace the pins in that connector.

My Galaga was in decent original shape, but the connector to the power supply had burnt pins, as in black. It would come on, but keep resetting. I had to fix that connector. Not surprised to hear that those pins burned (prob why it was soldered direct)

If you want to go original, Bob Roberts has a repair kit for the original style power supply board-
Gorf & others OEM PS (90411) Repair Parts Kit $21.00
 
I've printed out the schematic and have been cleaning up and a rewiring the original power brick. Actually I'm mostly replacing corroded stuff and un-doing the operator hack job.

My major concern here is to make the game as original as is practical and also fix any known weak spots on this particular game.

A few more questions:

1. I already ordered this "switching power supply". Everyboy always says, "use a switching power supply in your galaga". Why is that? What's the big deal? Is the power PCB a total POS?

2. Where does the switching power supply plug in to AC? How is arrainged that the switching supply turns off when you turn the game off?

3. Does it matter how the line filter on the power brick is wired to the AC cord? It doesn't show any neutral/hot polarity on the schematic but the filter itself has an old sticker that says "line up the blue dot" along with a blue dot above one of the terminals.

Thanks as always, KLOV is a great place for all those imponderables that you cannot get from the schematics or figure out on your own.
 
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I have a working harness, Transformaer assembly and pcb powersupply for a galaga if you are inyerested. Or

You will still need a line filter no mater what you do as far as the switcher. Also a couple of fuses. The monitor, Marquee light, PCB powersupply, and the coin counter is all that work off of AC in Galagas.

Thanks, I'll keep you offer in in mind, I think I will be able to resurrect the power brick.

It's not as screwed up as I originally thought.

We shall see.
 
Thanks for posting this as I just bought my first power supply for my first arcade venture. I want as much info as I can find about this stuff. Galaga will be mine.

I had the same concern about why a switching power supply is that big of a deal. I want it as original as possible, but I also don't want to burn my house down!

Do you happen to have any pictures of the work you're doing on yours? Just for curiosity sake. Until then, I have a control panel, PCB set, power supply assemblies and all I need is a monitor/chassis to start playing around. Unless you can think of anything I can do without a monitor. Do you have the original K4600 tube and chassis for yours?
 
Mitchshaft,

Go on the internet and see if you can find a pdf of the owner's manual for your game.

It will have wiring schematics. They are pretty easy to follow.

I got my first game about 4 years ago as a surprise gift for my wife. Since then I've bought a few more games.

I've done a lot of work on these games already and I find that if I take my time and make absolutely sure I understand what's going on, I have a 100% success rate.

This website is good for asking all those weird questions that come up.

These games are pretty simple and easy to fix. I once bought a dead game "with power supply problems", which I fixed by plugging a loose wire back onto the safety switch on the back of the game.

Today I put the power supply board on my workbench and slowly traced all the wires off the wiring schematic and rewired all the weird crap the last owner did to it.

Then I stuck it in the game, plugged it in, and used a digital multi-meter to make sure all the various connectors were showing the proper voltages.

Moral of the story: slow and steady wins the race.

Hope this helps a little.
 
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