Hi, I'm new here. I have a two year old Mitsu platinum 46 HDTV. I just noticed the other day that I have 2 black spots on the screen. Since its a CRT rear-pro, I'm assuming that I can't have 'dead pixels' on the CRTs. Perhaps its just dust on the inside of the screen? I've heard nightmares about cleaning the screen. Any advice would be appreciated. Also, any info on a 'DIY tuneup' would be great, too. Thanks.