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Optical Clean of projectors

What is an optical clean? This is where we completely take the projector apart to clean all the dust that has built up internally and has also got in around the optics of the projector. Even though the outside of the projector may look clean the inside can often be very clogged up with dust like in picture below
Excess dust on projector fan
This is only one of the fans in an Sanyo XE-45 projector and that is the amount of dust that came out from giving it a tap off the desk. Having projectors that are this clogged up with dust dose not only shorten the lifespan of it but it also makes the fans run at a higher speed as they have to work harder to keep the projector cool adding to the noise level. If you want a better explanation plus before and after picture Please click here