[SOLVED] How to fix case fan not spinning properly

[jn89d12hdj]

My case fan doesn't spin properly. Other fans work just fine, but one of them will wiggle once and then just not move at all.
The LED's work and the fan is not noisy and spins smoothly when manually spinning it (it was just delivered).

I believe this is not a software issue or something similar because manually hooking up the fan to a 12V source results in the same behaviour.

Is this a known problem? How could I fix this without buying a new fan?

Details:
- Sharkoon Brushless DC Fan
- Model: SF1220L6
- 12V (DC) 0.25A

 

[popatim]

Sent it back, it should spin at full speed when connected to 12v with no rpm control

 

[jn89d12hdj]

Sent it back, it should spin at full speed when connected to 12v with no rpm control

Alright thanks!