Fans RGB LEDs dimmer than before all of a sudden

[R4k4n0th]

I have two Nzxt fans with RGB lights on them (Aer RGB Fans). Several weeks ago, after turning on my computer, they just started to look dimmer than before. It is extremely weird. They are not able to be dimmed down via the control unit or the software. The control unit is not capable of doing it. So, we can dismiss a software or RGB controller problem. What is even more strange is at random intervals they go back to their normal state, and after a random amount of time they become dim again. Both of them do it simultaneously. What could be causing this? How can I solve it?

My system:

• Gigabyte Z390 Auros Master
• Intel i9 9900k || Nzxt Kraken x62
• G.SKILL Trident Z (F4-3200C14D-16GTZ) DDR4 3200MHz C14
• Evga 1080 Ti SC2
• Samsung 850 Evo 250 GB
• Samsung 850 Evo 1TB
• WD Desktop Black 1 TB
• NZXT S340 Elite Steel
• Seasonic Focus Plus 650W
• 2 x Nzxt Aer RGB Fans
• Nzxt Hue+ Lighting Control

 

[Hockster]

Check the PSU voltages, make sure they're all in spec. Try powering the RGB hub from a different connector.

 

[Bill_Bright]

The control unit is not capable of doing it. So, we can dismiss a software or RGB controller problem.

No you can't. If a light switch cannot turn off a light, does that automatically mean you can dismiss the switch? If the switch controls the software that controls the switch, does that automatically mean the software is working?

Hockster is right. Try a different connector. Try connecting the fan directly to the PSU. You need to isolate each component in the chain, then eliminate one or the other. If the LEDs run at full brightness when connected directly to the PSU (assuming the PSU voltages are correct and they likely are or the computer itself would likely be having problems), then the fans are fine. That then would point to the software or controller, not eliminate them.

 

[R4k4n0th]

No you can't. If a light switch cannot turn off a light, does that automatically mean you can dismiss the switch? If the switch controls the software that controls the switch, does that automatically mean the software is working?

Hockster is right. Try a different connector. Try connecting the fan directly to the PSU. You need to isolate each component in the chain, then eliminate one or the other. If the LEDs run at full brightness when connected directly to the PSU (assuming the PSU voltages are correct and they likely are or the computer itself would likely be having problems), then the fans are fine. That then would point to the software or controller, not eliminate them.

I connected the LED controller to the PSU via another cable, and the problem now seems to be fixed. Previously, the LED controller and HDD were connected to the PSU via the same cable. Fans are still connected to the mobo, not to the PSU. I did not try to connect them directly to the PSU. This could maybe another solution.

 

[Bill_Bright]

and the problem now seems to be fixed.

Great. Thanks for the followup.