The original lamp on my Optoma UHD50 failed in just 458 hours. Optoma's 1 year warranty is only 90 days for the lamp (disappointed) on my 11 month old projector. The Optoma lamp was double the price so I bought it from Revain. It has the best guarantee, it took 10 minutes to install and the performance is perfect. Definitely 5 stars.
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