Lights Only Working on 1 out of 6 Fans, but All Appear in iCUE

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Hello,

I’m experiencing an issue with my Corsair fans. I have 6 QL RGB series fans. When I first set them up, everything worked perfectly, and all the fans lit up correctly. However, after some time—now for about 2 years—only 1 fan's lights are working. All fans are still spinning, and as you can see in the attached image, they are all detected and shown as illuminated in iCUE.

I have no idea how to resolve this issue. I’ve already tried reinstalling iCUE. Additionally, I have ASRock Polychrome RGB and MSI Center installed on my PC, but I’m unsure if or how they might be affecting the fans.

I hope someone can help me.

Thank you.

[c-attack]

The Lighting Node Core is a serial controller, so a break in the circuit on fan 1 will prevent lighting further down the circuit. The key is to figure out whether the break is on fan 1, fan 2, or the LNCore ports. 
 

Try swapping fan 1 and fan 6 on the rgb controller and see if the lighting changes. If it does not, swap 2 and 6. You’re trying to rotate the bad fan to end (allows lighting on 1-5) to identify it. 

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the thing is that at one time last month all fans worked for like 1 hour. I thought it was fixed but when i restarted my PC only 1 fan was lighted again. So i dont know if one fan is broken as you said when all fans worked at one time 

[Loading23]

On 8/10/2024 at 8:35 PM, c-attack said:

The Lighting Node Core is a serial controller, so a break in the circuit on fan 1 will prevent lighting further down the circuit. The key is to figure out whether the break is on fan 1, fan 2, or the LNCore ports. 
 

Try swapping fan 1 and fan 6 on the rgb controller and see if the lighting changes. If it does not, swap 2 and 6. You’re trying to rotate the bad fan to end (allows lighting on 1-5) to identify it. 

i swapped the fan 1 with fan 6 i think and it worked perfect. i dont know the reason for it but i dont care haha. thx so much. 

[c-attack]

It seems like maybe one of the last LEDs on the original #1 fan might be the bad spot.  Check to make sure all  LEDs are illuminated on that fan.  It can be hard to tell on QL with the rear side usually hidden.  You can try and check it by putting up a single static color, clicking in the fan UI box to remove all the active lighting, then adding LEDs back one at a time on the rear UI section (CTRL + left click).

[RonH]

Try using the Wizard and manual setup. I had a similar problem when recently updating to most recent iCue version.