3dXtreme: Antec pp412x 400 watt Psu Mod
Author: Dean
Nottis
(This may also work with CWT-375ATX12
(PFC) Psu's as well)
Hopefully these pictures will help
with anyone wanting to go in and adjust the pots in an Antec
pp412x psu. DO NOT TOUCH anything else inside...you may get
physically hurt or possibly killed! Be extra cautious when
doing anything even remotely close to this!
Notice the pot locations inside the psu.
The +3.3v pot is tucked under the wires...you'll need a slim
philips head screwdriver to get back there.
Here's the +12 volt and +5 volt pot. This single pot
regulates both the +12 and +5 volt rails. This pot gets turns
(+12/+5 pot) clockwise to increase the
power to those rails. Only a slight turn is
necessary...then close it up and check in on your pc. Don't
run it with the psu open...you will cause damage. This may
take a few tries of removing the psu and messing with these
pots to get it where you want it.
The back pot is a bit trickier. This regulates the
+3.3 rail and gets turned
Counter-Clockwise to increase the
power!
+12/+5 volt Pot - Clockwise to increase the
power
+3.3 volt Pot - Counter-Clockwise to increase the
power
Now completely seal up the psu and reinstall it.
After a bit of messing with it...you can have results
like this now:
Bypassing the Thermal Sensor on the PSU to let the
fan run full speed:
Here's the second mod I've done on
this psu. Basically the power is supplied at the PCB from
there the sensor gets it's power...and off the sensor the fan
was plugged into it.
The orange circle below shows the PCB
power, the yellow circle shows the Thermal Sensor where the
fan originally plugged into and the blue circle shows the
removed Thermal sensor plug.
Basically all you have to do...remove the Thermal
sensor's plug from the PCB. Then disconnect the fan power from
the Thermal Sensor and plug it directly into the PCB power.
The picture below shows it already finished. If you follow the
connector circled in orange you'll see it heads straight back
to the fan now!
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