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Problem with my Noctua fans

lewoss
By lewoss
in Power Supplies
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Posted

Hello

 

I recently bought the Noctua NF-A4x20 PWN to replace the Nidec Ultraflo fans in my PSU. When I now turn on the PSU it starts for like 3 seconds before shutting down and starting again.

Can anyone please help me?

I used this as a help.

 

 

IMG-20231208-WA0002.jpg

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Posted

Did you connect the tach wire?

If so you might be SOL, some PSUs will run the fan at full speed on powerup and verify the speed matches what the stock fan is supposed to spin at, if you install a slower one it will see a slower speed and consider it faulty.

F@H
Desktop: i9-13900K, ASUS Z790-E, 64GB DDR5-6000 CL36, RTX3080, 2TB MP600 Pro XT, 2TB SX8200Pro, 2x16TB Ironwolf RAID0, Corsair HX1200, Antec Vortex 360 AIO, Thermaltake Versa H25 TG, Samsung 4K curved 49" TV, 23" secondary, Mountain Everest Max

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB SX8200Pro RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Asus Zenbook UM325UA, Ryzen 7 5700u, 16GB, 1TB, OLED

 

GPD Win 2

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  • Author

I disconnected the tach wire but it still shuts off

 

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Of course, no feedback is even worse than wrong feedback.

I meant it as "if you hadn't plugged it then do that, if it's already plugged it probably won't work".

 

Server hardware tends to be picky about things working exactly as designed for reliability reasons.

F@H
Desktop: i9-13900K, ASUS Z790-E, 64GB DDR5-6000 CL36, RTX3080, 2TB MP600 Pro XT, 2TB SX8200Pro, 2x16TB Ironwolf RAID0, Corsair HX1200, Antec Vortex 360 AIO, Thermaltake Versa H25 TG, Samsung 4K curved 49" TV, 23" secondary, Mountain Everest Max

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB SX8200Pro RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Asus Zenbook UM325UA, Ryzen 7 5700u, 16GB, 1TB, OLED

 

GPD Win 2

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