Atari Big Blue Polarity

JonM

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Just rebuilt my first atari power supply. I took a lot of pictures while taking it apart. I forgot to take a picture of which way Big Blue goes back in. There are four orange wires and four purple. Which ones go on the positive and negative terminal of the Big Blue? I've searched the schematics and digrams but have not found the answer.

A little help here would really be appreciated!

Jon
 
Look at the wire color on the + tab of the bridge rectifier. Thats the wire color that goes on the positive. I think its Orange but its been over 10 years since I've had to replace that cap in a game so I'd rather you checked then blow something up.
 
Check continuity between the wires and a good ground. You'll find continuity on the - wire for the cap between that terminal and ground.

RJ
 
The bridge rectifier + is connected to the cap's +. However, I'm not getting anything on my ohm meter when I connect to the - cap terminal and ground. I've attached a picture. Please help me verify this is right. You can see from the bottom of the new cap, the - side is on the right.

Does anyone have a good digram for an Atari PS? I've got all the schematics for this DigDug cocktail but I don't see anything that can explains how this thing should be wired.
 

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Does anyone have a good digram for an Atari PS? I've got all the schematics for this DigDug cocktail but I don't see anything that can explains how this thing should be wired.

Yes:

http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Dig_Dug/Dig_Dug_SP-203_4th_Printing.pdf

Page 5 of above linked PDF.

PS--sounds like there's confusion about the term "ground". I suspect you're thinking earth ground, and testing to the metal frame of the thing, whereas the ground channalmanic is referring to the ground on pins on J5 (pins 4 & 5)
 
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Thanks for the schematic. I do have it wire correctly. Thanks! I'll let you know if it bursts into flames when I fire it up.
 
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