INFO: Turn an ordinary power supply into a valuable testing station
DATE: 09/22/03
COST: ~$7
TIME: An afternoon
SPONSORS: None
AUTHOR: Jon "Wampa" Bender
Making room:
Originally I planned to take the entire assembly out of the
PSU casing, but found that this would have taken a good deal more time, and was
not needed. I unplugged some switches and took out the screws holding the PCB
in, and the separation seen in the next picture or two made working on the wires
easier.
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| (22) Switch mess |
(23) On the floor |
It was now time to do some wire cutting. All wires that were
connected to the motherboard header could be removed, except one ground wire and
the green wire. The P4 board connectors could be removed as well. It was simply
a matter of following the wire from the connector to the PSU's PCB, and cutting
it off as close to the base of the wire as possible, to avoid shorts. Once all
the wire chopping was done, what was left is the four 4-pin Molex connectors, and
the Berg connector (attached to a 4-pin).
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| (24) That looks better |
(25) 4-pin to Berg removed |
I used the same 1mm flathead screwdriver to remove the
head of the 4-pin Molex that was attached to the Berg connector. A few snips
later and the Berg was gone, leaving four 4-pin Molex connectors.
Wire connection:
There was still the matter of the green wire to ground wire
connection. I decided to do this internally by having the two wires directly
attached to each other. I first trimmed the wires from their previous length,
stripped the ends, wrapped them together tightly, and wound a small amount of
electrical tape around it.
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| (26) Previous length |
(27) Wires attached |
The wire mess was tamed, and I put the power supply
back together to make sure my green wire to ground wire attachment worked fine,
which it did.
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| (28) Looking
slimmer |
There was only one other type of connector I wanted on the test
unit besides the 4-pin Molex, and that was a three pin connector. I grabbed a
3-pin to 4-pin adapter I had lying around, and integrated it into the wiring.
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| (29) 3-pin to 4-pin |
Now I needed a solid design for how I would have the
connectors coming from the power supply. I could have been lazy and just had the
connectors coming out of the back of the power supply like they were originally,
but I wanted this unit to be compact and all-in-one. After turning over the
power supply in my hands and drawing out a few different ideas, I came across
one that seemed almost too perfect.
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| (30) See how I did it? |
I took the Molex head off the wiring, and put each individual
wire through a square hole in the venting along the back of the power supply.
Then I reattached the Molex connector head on the other side of the venting,
keeping the connector somewhat in place, as well as lined up, with no cutting!
Proceeding along, I did this for all four 4-pin Molex connectors. I also had the
3-pin connector protruding in a similar fashion.
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| (31) Lined up |
(32) Final layout |
While the connectors were pretty taught against the back
panel after being attached, I used a thin line of Krazy Glue along the insides
to have them perfectly and permanently lined up along the back of the power
supply. I have attached and removed fans from these connectors, and they have
not budged a centimeter.
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| (33) Two testing fans |
(34) Powered up |
At this point, the mod was completed. I had my testing
station, and it is on top of my work area today, now a valuable testing tool. No
longer will I have to attach fans to other computers to test them, nor will I
have to have a computer setup solely for testing purposes. A total cost of $7,
and an investment of four hours paid off.
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| (35) Fans attached |
(36) Testing in progress |
If you have any questions, comments, or "attaboy"'s for this
mod or my other reviews, feel free to
drop me a line. This mod project was linked two days in advance on our
forums, so check them out and maybe register and say hi, as I have a few
other mod projects in the works right now :).
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