Ticking Case fans

[snail915]

I have 5 case fans in my computer. 2 came with the tower, 3 are optional extras (1 extra upfront, 2 extra on top). Recently my computer has begun to sound more and more like a Geiger counter and I've narrowed it down to both of the top 2 case fans.

Question is: Can it be stopped or are they dead?
Other Question is: All 3 optional were identical, are there any fans that work better horizontally as opposed to vertical? (The 3rd which is on the front doesn't tick)

 

[CropEditPaste]

Cables could be hitting the fan, and case vibration could also be a factor. Try turning on the fans outside of the computer and holding them in your hand to see if they still make the noise.

 

[snail915]

Cables could be hitting the fan, and case vibration could also be a factor. Try turning on the fans outside of the computer and holding them in your hand to see if they still make the noise.

Still ticking, 100% no wires catching on either of the 2 fans, there's no ticking if they are running at 100% but the ticking is most prominent at 40-60% which they typically sit at.

 

[Isokolon]

if you disconnect the fans from the case and hold it in your hand they still tick?

then the bearing is getting defective and they probably will soon stop to spin.

I suggest replacing them. I can give you a few suggestions for good fans if you specify size & budget

 

[Susquehannock]

Agree. Probably the bearing. You can see if the center shaft has a rubber plug under the sticker. If so remove that and apply a drop or two of lube. Silicone is best.