Hi worfzara,

I'd wait until it either blows out, the replace projector-bulb warning comes on, or until you are bothered by the dimming of the image. If you remember those funny old CRT sets, even they would dim to about 50% or less of their original brightness over their typical 15-year life span.

I remember seeing a distinct loss of contrast and brightness after about 12 years viewing a 28-inch CRT set, but it happened so gradually that I didn't notice it until it became really gross.

Cheers,
Alan

Alan Lofft,
Axiom Resident Expert (Retired)