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Discussion Starter · #1 ·
Hello,

i have an offer for a 3M 8730 with an 260W Metal Halide Bulb. I have the Maschine at my home for testing it before i buy it. Its a used maschine. The Menu say the Lamp Time is 186 Hours ( counting up to 2000 Hour -> the Life Time ).


So, far so good, but here is the Point.

A white Picture has very little color touch ( to yellow and brown ) in some corners. I have inspected the lamp and seen there are small blister in the Sphere of the lamp ( in the burning Room ) . This blister are light colored ( yellow and brown - it must be very hot there sometimes, not in this moment i hold the unit i my hand ;-) ) .

So, i think the light colored corner of my picture come from the bulb.


My question now:

Have anybody informations about the Lifecycle from this Lamps. After wich time the bulb get some blister in his sphere - after 50, 80, 100,110 percent of her lifetime ?. Is this the last stadium from the end of the lamp ? You can see at only at very white screens.


Maybe someone have experience with this stuff. I am very interested to here somethink about this.


Many Thanks and sorry for my excelent english.


Juergen

 
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