Hi,
please attempt to use a qtip and/or a tissue to clean any dust out of the fan. I would also use the table of contents within the manual of the device in order to get any cleaning advice from the manufacturer.
RESET the unit to factory settings
[email protected] or you can contact us at that address as we repair/renovate all items electronic and electrical old and new.
Hi. You could try contacting them directly although they can't help if the product is more than 7 years old - they aren't the manufacturer either but hopefully can point you in the right direction:
http://www.sharperimage.com/si/company/customer-service.jsp