View Full Version : [Guide] How to make a test psu

07-10-2005, 03:28 PM
How to make a test psu

Warning - I will not be held for any damage or accidents that occur in that making if your test psu, Also be very careful when making this test psu because even when the psu is turned off certain components inside will still hold an electrical charge which can result in injury or even death. Modding you psu in anyway will void you warranty so take that into account.

So you've just got a new psu but you dont want to throw away your old psu away, well why not try this guide and turn it into a test psu, this could save you alot of time instead of setting it up on your pc.

1) The items you will need

http://img107.imageshack.us/img107/2483/12aq2.th.jpg (http://img107.imageshack.us/my.php?image=12aq2.jpg)

First off you will need a ATX switched PSU, philips screwdriver, Wire cutters, Wire strippers, a short length of heatshrink tubing and (Optional) Soldering iron.

2) Taking the PSU apart

http://img252.imageshack.us/img252/7057/35ph.th.jpg (http://img252.imageshack.us/my.php?image=35ph.jpg)

Remove the four small screws from underneath the psu in each corner with the philips screwdriver, then remove the psu's cover. Put the cover and screws to one side for later.

3) Removing the wires

http://img252.imageshack.us/img252/8761/45mn.th.jpg (http://img252.imageshack.us/my.php?image=45mn.jpg)

Remove the rubber grommet and wires from inside the rubber grommet that are attacted to the psu's wire slot and put them to one side.

4) Seperating the wires

http://img252.imageshack.us/img252/5369/59xf.th.jpg (http://img252.imageshack.us/my.php?image=59xf.jpg)

Now seperate the ATX connector bundle from the molex power wires by snipping off the zip ties that are wrapped around both sets of wireswith the wire cutters. Now pull apart the wires from each other and put them to one side.

5) Choosing the two correct wires

http://img54.imageshack.us/img54/6077/69ro.th.jpg (http://img54.imageshack.us/my.php?image=69ro.jpg)

Now you need to find two wires in the ATX bundle the first one is the only green coloured wire in the psu, then to the left there is the second wire which is coloured black.

6) Snipping the two wires

http://img54.imageshack.us/img54/8217/77op1.th.jpg (http://img54.imageshack.us/my.php?image=77op1.jpg)

Now snip the green and black coloured wires we just found in the part before from the ATX bundle and make them about 3inches in length with the wire cutters, now put the green and black coloured wires to one side then we shouldnt get them accidently snipped later.

7) Removing the ATX bundle

http://img30.imageshack.us/img30/2193/89bj1.th.jpg (http://img30.imageshack.us/my.php?image=89bj1.jpg)

Now snip the entire ATX bundle of wires from the psu, try to snip the wires as close as you can to the PCB board.

8) Stripping the two wires

http://img30.imageshack.us/img30/6830/92ig.th.jpg (http://img30.imageshack.us/my.php?image=92ig.jpg)

Now strip the green and black wires back by half an inch each with the wire strippers, cut off just over half an inch of heatshrink tubing or more if you want to, now slide it over one of the wires and twist both the wires together. Instead you can solder the wires together but this is optional.

9) Heating the heatshrink tubing

http://img30.imageshack.us/img30/8145/100kw.th.jpg (http://img30.imageshack.us/my.php?image=100kw.jpg)

Now slide the heatshrink tubing over the two twisted wires until you happy its in the exact correct placement, now get a hairdryer and apply heat to the heatshrink tubing so that it wraps around the wiring nice and tight.

10) Rewiring the wires

http://img30.imageshack.us/img30/8641/26qq.th.jpg (http://img30.imageshack.us/my.php?image=26qq.jpg)

Now put the green and black wires back inside the psu case, now reinstall the rubber grommet into the psu's wire slot
hole with the molex connector wires inside it, then slot the psu's cover back on and screw the four philips screws back into

11) The final modification

http://img30.imageshack.us/img30/6138/116xb.th.jpg (http://img30.imageshack.us/my.php?image=116xb.jpg)

Well after all that hard modifying to your psu you have the final test psu, with this psu it has a switch to turn it on so i just plug it into a main socket and turn the test psu on.

Guide Source: Xmodding.com (http://www.xmodding.com/forum/index.php?showtopic=946)

Guide made by DannyGlass, Xmoddingİ 2005