Atari Power Supply: Volt plugs

shilmover

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I am working on getting my Space Duel cab running again. I have an Atari PS that I am going to put in there... There is a plug just below the transformer, to the right of the fuses called the Volt Plug (see 1st picture below).

My power supply had one plugged in there (with yellow wires), but there are 3 more connected to it (blue, purple, brown wires). Anyone know what they are used for (I am assuming different games, but I dont want to randomly plug them in)... They were labeled at one point, but the labels have nothing on them anymore... :)
 

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Sounds like a standard Asteroids power supply. Does it have two large diodes on the bottom instead of a bridge rectifier?
 
Them plugs change the voltage depending which country the machine was sent to

IE in Australia, different jumpers are used as we have a 240Volt Supply :)

IE the machine always has the same voltage, but the supply differs
 
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