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To Stunko, thanks for the comment and question. Keep in mind that the vast majority of consumers will never watch a projector for 20,000 hours before they upgrade it. (That is 10,000 two-hour movies obviously.)

The light source cannot be replaced. However, it does not stop at 20,000 hours. You can keep using it beyond that if it is bright enough for your application. The 20,000 hour limit is based on the point at which the lumen output degrades to 50% of its initial output (same thing is used to estimate UHP lamp life). The advantage to LED/Laser, at least in Panny's implementation, it that light output degrades on a straight line curve. UHP lamps degrade much faster than that in the early portion of their lives, then flatten out in the later portion of their lives.

Once the projector gets too dim to use it for the application you have, you just replace the projector. It will be cost prohibitive to replace the light engine, and it is not clear that the vendor would even offer that as an option.

Evan Powell, Editor