Unless it's just dust, there is no fix besides warranty work (depending on company, some will fix a single dead pixel if it's in center of screen, others will not). Dead pixel is common and can come and go or stay permanent. If it's dust you should be able to focus it away and it's should not focus or appear identical to surrounding pixels. If it's a perfect square, same size or shape, and focuses at same point as other surrounding pixels then it's a dead pixel :-( If it was dust, then you can try blowing with canned air (just be careful not to invert can or over do it as oil may come out and ruin your optics--test on tissue or window glass to make sure it's just air and not oil comingout prior to using it on your projector) via red tube extender between intake fan blades 2-3 times. Some are brave enough to open theirs up to blow more accurately but I'm not LCD dead pixel(s) are common due to triple panel which triple the risks. Do a search on dead or stuck pixel and you'd see what I mean. You can return or exchange this unit if new for a restocking fee, but the new unit may have the same problem. You'd have to go DLP to lessen the risks although not immune (dead mirrors can happen just less common). Sorry to hear but you may have to live with it.
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!