I recently noticed two overlapping 4-5" faint white blobs on my 61" DLP TV monitor which are only visible on a completely dark screen image. They look just like a picture I saw of a blank screen from a DLP projector which apparently had dust on the DMD. Does anyone know if cleaning the DMD is possible at home rather than having to have the TV moved to a service center for cleaning? I've got an in-home warranty and really don't want to have to move my TV for such a small problem. Thanks!