The Panasonic ET-LAD60AW projector bulb is one of the many
that has an artificial lamp hour limit on it which is there technically to
prevent damage to the projector if the bulb explodes (very rare that this
actually happens), but it will often leave a perfectly good bulb as a paper
weight. This specific bulb has a limit of 2,000 hours but in my experience, you
can easily get another 500-1,000 hours out of it before it just burns out. This
mod will only work on a bulb that has not hit its 2,000 hour limit since this
will essentially stop it from counting and reset back to where it was before
the mod when the projector is power cycled. With this simple mod, you can
disable the hour counter on the bulb and save yourself some serious money.