Calling all Pros!

Has anyone else had their CND Shellac lamp making this noise? My old one started making this noise after about 3 years only on the 10 second timer, I decided to buy a new one as the noise from the fan started getting worse and worse and one of my clients said they could smell burning so stopped the treatment immediately! This is a video of my brand new lamp and it has started making the same noise again... my boyfriend seems to think it is the fan bearing that is loose on it but if anyone knows any other reason why would be much appreciated!