AT2005B psu modification

Thread Starter

wall_

Joined Sep 11, 2013
44
Hi, I am trying to modify an old ATX power supply with an AT2005B PWM controller to output a higher voltage on the +12v rail.
I attached an image file @Dodgydave posted on an old thread called "Hacking an ATX PSU", and my question is if I need to lift pins 2, 3, 4, 5 and 6 before soldering those pots.
Will it also increase the +5v rail's voltage? And why?

Thanks for any help I can get.
 

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Thread Starter

wall_

Joined Sep 11, 2013
44
20180919_122936.jpg
This was my attempt at tracing the connections on the AT2005B.

20180919_122811.jpg
PWM chip.

20180919_122828.jpg
Output caps, they're all 10v, except on the +12v rail it's a 16v cap.

20180919_122902.jpg
Funny how the PSU doesn't mention -5v but on the previous attachment there is a white cable labeled -5V on the pcb.
 
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