Readynas Pro 6 (RNDP6000) BeQuiet SFX Power 3 450w PSU (modded) upgrade info

thought i'd share my mod with you for information...

Following a power failure to the house (thanks NIE!) my NAS PSU blew up and had to quickly find a viable replacement. I ended up with this....

....anyway here are some pics of the process steps;

1. Purchased 1 x be quiet! 450w sfx Power 3 PSU - info in first post - to be modded.

2. Purchased 1 x Cooler Master X Dream i117 CPU cooler (just for the fan) - no mod needed.

3. Purchased 1 x 8" 24-pin motherboard extension - slight mod needed, but not essential.

4. Purchased 3 x 90 degree molex connectors - not essential as old ones can be cut from old psu.

5. Purchased 1 x braiding kit (various thickness) - available as a kit on Amazon (with heat shrink).

6. Purchased 1 x cable heat shrink set of various colour/sizes - available on Amazon.

Mods done:

Step 1: Take measurements of old PSU cables and wrote on them for reference.

Step 2: Modding the cables.

CPU cable 4-pin (double) - 1st one - peeled it away from its twin to use for making the 3rd Molex cable. Folded and braided the 2nd to correct length.

MOLEX - Because the new PSU only had 1x cable for Molex (with 3 ends), and 1x cable for SATA (with 3 ends) and 1x double 4-pin CPU header cable, I wanted to have 3 separate power cables to work with, so I had to borrow a separate 5v source (i.e. make a cable) taken from either the Molex or SATA cables which was pretty straight forward as i was using purchased 90 degree Molex connectors for the task. Because i was working with all-black cables, you need to mark them carefully. I used a bit of coloured heat shrink for this. Also, make sure you put the connectors on the right way round!

24-pin motherboard extension - Little to be done here other than shaping it with cable ties and braiding.

PCIe cable - It's not needed at all so this can be cut short and the ends sealed with heat shrink. I glued it to the top of the PSU as it sat nicely under the new Noctua case-fan I was installing.

CPU fan - Upgraded (temporarily) with a new (old-stock) i775 CoolerMaster fan. Removed it from the heatsink and pushed it directly onto the NAS heatsink. I think its 90mm radius. It is tight to get on but once its on it isn't coming off anytime soon. It has about 2-3mm clearance to the NAS side casing. As the new fan is a 3-pin I connected it to the 3-in header on the daughter-board (left side). Not 100% sure I should have moved it from the main board (4-pin), but it still worked so left it for further testing.

Case (exhaust) Fan - Upgraded to a Noctua of same size and voltage. Only needed to fold the cable up and braid it to correct length.

Putting it all back together.

The Completed PSU mod (better than factory ? lol) - Used the original PSU riser adapter, simple swap. just remember to switch the new PSU switch to the ON position when connecting the mains extension wires to the NAS chassis.