HF Dust Collector motor making noise now

[Ian Scofield]

I've had the HF dust collector for about 7 months now with no issues. Went out to the shop yesterday to work and fired it up and it started making a vibration/resonant sound. It didn't sound like the impeller was hitting anything or scraping but there's a vibration coming from the motor. I've tightened down every bolt I see, but can't quite figure it out. I've recorded it here:

https://clyp.it/xgu4bvyu

Has anyone experienced this before? Trying to see if there's an easy solution before I have to figure out who to go through for the warranty.

[Dan Henry]

check the nut on the fan, mine came loose and I thought the worst but retourqed the nut with some lock tight and back in buseness
Dan

[Ian Scofield]

I removed the side panel to get access to the impeller and it is definitely on their securely. I believe it's the bearing inside that's causing the issue:

https://www.youtube.com/watch?v=Bnvq...q7j1QLX5NdI05A