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Not the Lamp: How Internal Dust Accumulation Silently Robs Your LCD Projector of Brightness
When a Sanyo LCD projector gradually dims over months of use, most owners immediately suspect the lamp. In many cases, however, the true culprit is a far less obvious problem: dust that has migrated deep into the optical path, coating the very surfaces responsible for producing a bright, accurate image. Understanding how this happens — and what to do about it — can save you hundreds of dollars in unnecessary replacements.