110V to 230V (mATX) a4000 PSU conversion

[pauli]

Hi

Just some pics from PSU conversion project. Replaced original 110V US PSU internals with modern mATX 230V.

PWR_ON & GND from ATX-connector soldered to original on/off switch. Works perfectly.

New fan is Nexus silent series. PSU is Origen 230V 320W mATX (with more than enough on 5V rail..)

PSU with original internals just opened:

Gathered some dust:

PSU case cleaned and new attaching points added:

mATX internals added, test run in progress:

So much space.. mATX pcb is about half length of a4000 psu case:

Case closed. Took about three hours to complete (22pm to 1am). At one point my wife came from bedroom and said "one happy nerd..." when she saw me and all this stuff on our kitchen table.

Still some small things to do. I have to cover that hole, and add 230V/110V switch, which is now inside case.

---------- Post added at 01:53 ---------- Previous post was at 01:47 ----------

Orig pictures at
http://www.suikka.net/~pauli/a4000-psu/

I didn't find any dimension info on a4k psu. I had to wait until my a4k arrived from usa before i could buy replacement psu.

So, here is A4000 power supply dimensions, if somebody needs it:

depth: 17cm
width: 12.5cm
height: 11.7cm

pcb is 14cm deep.

NOTE: Not very accurate measurements!

 

[MZ3540]

Very nice work.

A couple of weeks ago I did the same conversion to my a4000. The info on Ian's website made it very easy.

The atx psu I used didn't fit. I had to use a rotary tool with a 1" cut-off disc to trim 1/4 inch off the length of the circuit board.
I also had to trim the bottom edge off the fan.
It just squeezes in.

Working around those power cap was very unsettling... I never want to do this task again.
Sure, I did properly discharge the caps. There were several points I had to test my work and AGAIN have to discharge the caps before continuing.

Now I have a 3.3 volt rail in my a4000 which is handy to have (also sata power connectors if I ever need that).

 

[SkydivinGirl]

Great job! It looks somewhat like the mod I did on a broken A4000D PSU. The main thing for me was making it invisibly integrate into the A4000D and use the same power button. I cheated a little on mine by using a pre-made ATX converter from AmigaKit.

Heather

 

[Buzzfuzz]

Looks very clean, I'm about to do the same in the 3rd week of October.

Now I have a 3.3 volt rail in my a4000 which is handy to have (also sata power connectors if I ever need that).

If the Ultimate PPC card comes to life, you will need the SATA connectors :wink:

 

[salaxi54]

Very nice and clean job there. Thanks for sharing!