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Helo everyone.

I just wanted to share the PSU MOD to all of you..
this is my second revision, the first one i use intel pentium 2 big heat sink plus additional fan, so it's kinda messy, so i rework it.

Right now i'm using smaller heat sink from unused intel mother board with the idea of using the external UNLIMITED air to cool down the power resistor, so the power resistor have it's own personal fan to cool it down (

The PSU i use is 450Watt ATX PSU from OKAYA (never heard of this, but it's really cheap, i got it for Rp.95.000,-, it's same as 9.04$ at rate of 1$ = Rp10.500,-, i live in Indonesia btw).
The PSU have a really poor quality, but i only want to try the mod so i just get it.

Power resistor is 10 watt 1 Ohm, in 2S2P design as the load on 5V rail, so the total load is 40 watt with olny 1 Ohm (forgive me if i'm wrong). The result is 12.09 - 12.12 volts at 12v line

The drawback of using the smaller heat sink is the power resistor is getting really hot (i didn't measure it though, but i think it's just me, because i can't stand heat as much as others). The first bigger heat sink (intel pentium 2 heat sink, but sorry dont have a chance to take a picture of it) with it's small fan is still getting hot, but by add a large fan the heats get fade in fast.

But still, using the smaller heat sink + some thermal compound between them + hoping the external unlimited air supply will get coll the power resistor fast enough. Beside, even IF the power resistor gets burned downand got cought with fire (like that's going to happen? ... Can that really happen???) it will be notice fast enough to take an action (like shut it down etc.).

I haven't test it with load yet, i don't have any chargers yet, but i thest is with some 16v bulb (4X 4v bulp in series) and it turn on, so i quess the PSU is really working.

Now, i really can get my self some charger.... (poor me)

I'm giving some of the pictures, so give me some opinions + suggestion and i hope this design can inspire the others when converting their PSU.

Thanks also for this threads, because without it i can never try and finish this kind of PSU mod. Thank you very much everbody.

NB: the PSU looks blacky because i tape it with some black thick tape to prevent me get shock when moving it while the PSU is ON.