Sounds to me like a "heat" problem.xenic wrote:I'm not pressing on the fan frame. I'm pressing very lightly on the center of the spinning fan with the tip of the pencil. The screws are tight. The buzzing sound doesn't sound like typical fan vibration noise. It's louder and stops after the X5000 has been on for several minutes. If I turn the computer off and turn it back on after a few seconds, there is no buzzing when it starts back up. If I wait for 10+ minutes to turn the system back on, I'll get the temporary buzzing again. As I said in my first post, I could be wrong about what caused the problem; it could just be an unusual part failure. Based on the specs, it is a better fan than most of the ones I found online.broadblues wrote:So your fan mount is vibrating and the pencil stops it. Could be you simply need to (gentley) tighten some screws?If I open my X5000 case and press very lightly on the center of the fan with the tip if a pencil, the buzzing stops until I release the pressure on the fan.
Your fan case gets warm and the buzzing is gone.
If it's cold the buzzing is there.
Not sure what you could try...maybe the opposite of what broadblues suggested, loose the screws a tid bit, so the fan case won't be so "stressed" as it seems it is now.
Just an idea...