A projector in a conference room has been shutting down randomly during meetings. You've checked the lamp hours, and they are well within its rated lifespan. You have also verified that the lamp is seated correctly and undamaged. The cooling fan can be heard operating normally with no unusual noises. Power-saving settings are disabled, but the projector's interface is displaying temperature warning indicators. Which component should you replace first to address this issue?
Clogged or worn air (dust) filters restrict airflow, causing the projector to overheat and shut down. Replacing or cleaning the dust filter is a quick, low-cost step before replacing other components. The fan is running, and the lamp is still within its rated hours, so those are less likely causes.
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Why does a clogged dust filter cause a projector to overheat?
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How do I know when to clean or replace the dust filter on a projector?
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What are other common symptoms of a failing projector cooling system?