Help! Fan spins without LED or LED shines without fan spinning

[Blaxie]

I have 3 fans in the front and 3 in the back all synched with the rgb controller that came with the case.

After 2 months of working, one of the front fans stopped spinning, but the rgb in it still worked.

This is the case

Once I unplug the rgb cable from that fan, it spins again.

So it's either fan spins with no rgb or rgb with no fan spinning.

How do I make both the fan spin and rgb work?

 

[Angelwolf]

It sounds like a faulty fan to me. To check, it's worth switching with one of the working fans and seeing if the switched fan works.

That'll help determine if the problem is with the fan or the headers it's connected to