Film-Tech Forum ARCHIVE: XBO Xenon lamp storing time

This is topic XBO Xenon lamp storing time in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Marin Zorica (Member # 1716) on 11-06-2006, 05:08 AM:

Is there any date for XBO lamp that can be stored in original package?

I hear that XBO lamps from Osram may be stored for a 3 year max, so after that they aren't good for use?

I have situation where I install XBO lamps which are been stored for 10-15 year and now they working really fine, and newer have problems with ignition.

Is there any papers where this data can be found, so far I newer saw data like this.

Posted by Richard Fowler (Member # 893) on 11-06-2006, 09:31 AM:

Generally if you store the bulbs in the upright position you will prolong the shelf life of the bulb. Some foam packaging will deterioate if 3 to 5 + years old.

Posted by Louis Bornwasser (Member # 3063) on 11-06-2006, 10:30 AM:

According to Osram USA, there is no shelf life for their bulbs. Warranty is determined only by usage, not storage.

I have many old Osram bulbs from closed theatres, up to 20 years old, that work perfectly. Louis

Posted by William Phillips (Member # 1162) on 11-13-2006, 12:09 PM:

At one of my sites, i bought a job lot of old Thorn brand Xenons. Thorn stopped making xenon lamps a long time ago.Some of the packing is in a bad way but the lamps way outperform any new lamp. Lamps are 1600 watts in vertical lamphouse.

Posted by Louis Bornwasser (Member # 3063) on 11-13-2006, 02:50 PM:

At one time there was "interchange" between Osram, Tungsram and possibly other similar bulbs. I think Thorn was one of these. Louis

Posted by William Phillips (Member # 1162) on 11-13-2006, 03:55 PM:

Just had a look back through my lamp logs for this site. 6 years ago i ran a 1600HSC for 3500hours, it again was an old Thorn lamp, it struck first time everytime and only oulled it due to hours run. If i remember right I was told that it had been sitting on a shelf for about 10 years before I had it. An old projectionist used to stock pile lamps at the end of financal year to use his budget. The cinema had a refit and went up in lamp size so he got rid of them.
Did have an interesting one a few months back. I had a lamp back in 2001 that developed really bad flicker after 400hrs. The company ( not saying) would not replace it, I switched brands and happy ever since. Well i came across this lamp in storage so I thought I would try it out again. Put it in and its happily burning now better than the day it was new. Its total hours clocked are now 1600hrs. Lamp is a 1600HSC.
Maybe lamps perform better the older they get [Big Grin]

Posted by Gordon McLeod (Member # 33) on 11-14-2006, 03:00 PM:

I believe Thorn and Phillips had a arrangement for Xenon Lamps

Posted by John Hawkinson (Member # 1135) on 11-14-2006, 05:51 PM:

I would tend to suspect you originally had the lamp hooked up to a less-than-stellar rectifier, and the second time around you gave it a more-forgiving rectifier...

--jhawk