"gsale2k" wrote in message
oups.com...
What is the expected life hours of a picture tube?

I used the TV for 4 years, which is about 4 x 365 x 8 ~= 12,000 hours
of usage. I know other DLP type of tube/lamp only lasts for about 4,000
hours.


Depends how hard you drive them, they can last 50k hours, or you can burn
them up in 4k hours, lifespan of a CRT decreases exponentially as beam
current rises. Set the contrast and brightness to something reasonable and
you should get around 15k out of a set of good tubes before they're pretty
tired.