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Hello. Thank you for your question about our TH690ST. During the regular usage lifetime of the projector, there is no need to replace its LED light source. This is because the LED light source can last for approximately 20,000~30,000 hours. However, if you wish to change the lamp, please be aware that LED replacement cannot be done by the user. In this case, it's recommended to contact the service center to have it replaced. Warm Regards, BenQ Support
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