Look how pretty my Galaga Power PCB is...

Jlannoo

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Need Help with this Galaga Power PCB

I love the swinging capacitor best!

So Looking It seems I should replace all the fuse holders,change the caps and turn down the maxed out voltage adjustment before reinstalling. Anything else you guys think I should do?


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I find it intriguing how simple these are. lol

just put like 10 traces, a transistor and 2 giant expensive caps and a pot = power supply!

what's the deal with the swinging cap?
 
This seems like a good place to ask a question that has always been in the back of my mind since I really don't understand even the basics of power supplies......but:

Why can't you replace that board with a modern switching power supply?

I have seen countless threads of people with these older power supply boards and horrible hack jobs or the need to replace blown caps.
 
Why can't you replace that board with a modern switching power supply?
You can. Some games use special voltages that make it impractical to do so, but Galaga doesn't. Most games can be run easily from a switcher.

I have seen countless threads of people with these older power supply boards and horrible hack jobs or the need to replace blown caps.

Most of the time it's best to fix the old supply, since it's so very easy to do. Doing so also preserves the original wiring in the cabinet (which would have to be modified to install a switcher). Some games do have problems running from a modern supply (Donkey Kong uses more -5v than most modern supplies provide, Williams games tend to lose their saved settings, Spy Hunter hums, etc).

Some games are better off with a switcher, since the original supplies sucked (*cough* Taito *cough*), but many, for example the Atari games with their AR-II's, are very reliable once repaired.

In this case, repair to the original board is trivial, so there's nothing really to be gained from a switching supply. If he shops around, he can get the parts to repair it for about the same (or less) than the cost of a new switching supply.

-Ian
 
This seems like a good place to ask a question that has always been in the back of my mind since I really don't understand even the basics of power supplies......but:

Why can't you replace that board with a modern switching power supply?

I have seen countless threads of people with these older power supply boards and horrible hack jobs or the need to replace blown caps.

292057_10100198978582429_30804676_46318737_7086129_n.jpg


what were you just saying?
 
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