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Forum Discussion
Changing Fan in ReadyNAS ultra 4+ PSU
I've had a ReadyNAS ultra 4+ for a couple of weeks and found the fans to be a bit noisy. I've already changed the main 92mm one for a 120mm. Its helped a bit but I think the the main was actually ...
When I opened the image my jaw dropped too. I figured that with only a 120W PSU (vs the 220 found in the NV+ and NVX) that it would not need one. As Spock used to say "Fascinating".
I looked at a few 40mm fans on Newegg, and realized that there could be several problems. First is the fact that unlike the 40mm fan originally in the NV (RevA) which was mounted in the back panel of the PSU panel, the fan in this PSU is integrated into the actual PSU itself. To use an old boiler context, the original NV PSU fan was an induced draft fan (pulls the air through) whereas the fan in the new system is a forced draft fan (pushes the air through).
Then you have to make sure the new fan pushes as much air as the original fan, and most 40mm fans are of a fixed speed.
To replace the fan, you obviously have to take the PSU housing apart. Of course, by removing the PSU, you are aware you have already voided the warranty. It would be nice if you were able to purchase a new PSU to play with, but that is not a part that is separately available.
I looked at a few 40mm fans on Newegg, and realized that there could be several problems. First is the fact that unlike the 40mm fan originally in the NV (RevA) which was mounted in the back panel of the PSU panel, the fan in this PSU is integrated into the actual PSU itself. To use an old boiler context, the original NV PSU fan was an induced draft fan (pulls the air through) whereas the fan in the new system is a forced draft fan (pushes the air through).
Then you have to make sure the new fan pushes as much air as the original fan, and most 40mm fans are of a fixed speed.
To replace the fan, you obviously have to take the PSU housing apart. Of course, by removing the PSU, you are aware you have already voided the warranty. It would be nice if you were able to purchase a new PSU to play with, but that is not a part that is separately available.
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