Stern buys the power supplies from an outside
vendor.

http://www.meanwell.com/webapp/product/search.aspx?prod=RSP-500

My plan is to use the 3D printed 40mm to 60 mm adapter, remove the fan from inside the power supply and power a 60 mm quiet fan from the 12V accessory board. So the fan will be on all the time. I also already removed the lower shroud from below the power supply to allow more air circulation and this, in addition to the fan mod mentioned above, hopefully will keep everything cool.

I get that. This is completely reversible.

Ok, so there is residue from the foam tape that I was using to hold the bigger fan I had temporarily placed there. I can remove it. The idea is sound. A constant cooling flow through the transformer is more desirable than the temperature fluctuations that occur with the oem setup, and there is zero noise. Nobody sees it anyway.

I did remove the old fan. I had an 80mm fan sitting on top of the existing fan before this and with the lower power supply cover on, the original fan hardly ever cycled. I removed the cover and the internal oem fan never came on. The removal of the oem fan allows more airflow, the cfm of the 60mm fan is plenty and the air that blows out is not warm at all. Since the whole mod is completely reversible, there are no warranty worries, but I am not concerned.

It's Star Wars Premium. I found the correct plug that fits the factory 12 volt header and attached it to an extension cord that the fan plugs into since the fan cord is not long enough. I did not feel the need to buy the accessory board. Been working great.

I am not familiar with the fan you want, but the one I bought is excellent.

I don't know the name but will post a pic tomorrow and someone will know.

The forum posts the pics in the order it wants, but you get the idea...

Cord installed.jpg

Header.jpg

cord.jpg

I am certain that another power supply lid could be obtained if need be. My mod is not too different in principal. Disconnecting the tiny jet engine fan and instead supplying a steady dose of air is not a bad thing. Dust filters can be placed in the cabinet, but, unless you're in a barn, there won't be much.

Any dust present in the cabinet would be sucked in no matter what fan is used. Stock or otherwise.

My suggestion is to install a quieter fan, such as the Noctua, and have it run the entire time the machine is on. Stable temps make a happy power supply, and I can't hear it at all in a quiet living room.

Granted, the fan will need to be replaced in 15 years.

I think they are pretty good.
https://noctua.at/en/nf-a6x25-flx

Honestly, there should not need to be a fan at all. If Stern chose to, it could be passively cooled unit chosen for this application. With all the space in the cabinet, there is no reason to use this compact power supply.

I do have the latest version in my SW. If you see my prior posts, you will see the mod.

Stern's manual lists 104 F as the maximum operating environment.

And that is what I did. The silent fan runs continuously and there are no issues at all.

There are wires everywhere in there. I ran mine so neatly it is hard to find. There is an accessory block available that multiplies the single terminal into 8. My thought on the fan turning on and off is that temperature swings are best avoided with electronics to increase reliability, and a constant flow of air minimizes these. But, hey, do what you like.

Good of you to step and make these. I hope you sell a bunch.

It is cool that you went to all this trouble and time to come up with this solution. I gotta ask, though, wouldn't a resistor that could be plugged in line to the existing fan slow the thing down to make it quieter and still keep temperatures where they need to be?

I did the same thing with a 60 mm silent fan. I got my adapter from someone here on the forum. Works great, and I like the steady cooling rather than the on/off system.
I wonder if a perforated cover on the power supply would be sufficient so the fan could be ditched entirely.

I went this way with Starwars two years ago and used a quiet Noctua fan and wired it always on. Can't hear it and it works great.

That looks like a 60 mm fan.

I am of the constant on theory of fan operation. While the thermally regulated fan is one solution, the up and down temperature swings are not the best for the electronics in the power supply. A consistent temp is better. However, the fan included with the power supply is way too loud for continuous operation. The one that PinMonk provides is fine but I don't know the voltage it is rated for. I took a Noctua 12 volt silent fan and wired it to the accessory connector.

I would go this route but I like the constant on fan rather than one that runs intermittently. A constant temperature is better than one that cycles up and down. I just tossed the stock internal fan and replaced it with a 40mm Noctua fan wired to the accessory board. Works great and you can't hear it.

Another reason to toss the fan completely and replace it with 40mm quiet Noctua fan powered from the accessory jack next to the power supply. No reason to connect it to the internal jack, no worries about wires rubbing or interfering and no temperature swings as the fan is on constantly and completely inaudible.

For me, the factory look doesn't matter much when it's behind the backglass and even less when a functional improvement is made. But that's me.

I gotta say, PinMonk's efforts are to be recognized and commended. I know that the stock fan on the ps is crazy loud in a home environment and I would have gone with one of his fans but I don't like the idea of a fan switching on and off and the temp in ps fluctuating to the extent that it does with this setup. I had to find a compatible connector for the fan plug into the Stern power distribution board at an electronic supply shop and had to solder the wires to it.