The Ballast has blown out for this lamp with a loud Buzzzztttt. It does not look simple to replace nor should it have to be replaced after only 9 months of use. As this lamp is inexpensive, and I do not have the original packing materials, I am just going to throw this out and buy a better built lamp for my home office. I believe it would be much more trouble tr try to get it fixed than it's worth.