Question Case fan help

[switch-it-up]

Hi guys.
I have a problem with only one of my case fans, when i boot it up it starts to slow down, vibrate a lot and then stop however it spins right back up after. (this process happens for a few minutes before stopping)
I have had this setup for roughly 10-11 months and this only started within about the last month or two, please let me know if there's anything i can do. I have 3 of the thermaltake fans listed below and the other 3 are corsair ll120s. (specs below)

Corsair Carbide 275R Case
Thermaltake Pure 12 ARGB (only one of these are affected out of 3)

Would love to avoid taking the build apart but if I gotta do it I gotta do it and let me know if you want a video of it.

 

[thx1138v2]

It sounds like the bad fan i seizing up after it runs for a short time. Replace that one fan.

 

[switch-it-up]

It sounds like the bad fan i seizing up after it runs for a short time. Replace that one fan.

seems like i fixed it, i went in and reconnected some of the connections for the fans and it seemed the one fan had a bad contact (it was slightly angled and one of the pins wasn't fully plugged in)