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Author Topic: Xenon warranty Kenny Thies Film Handler Posts: 42 From: Effingham, IL, USA Registered: Jan 2003 posted 02-09-2003 01:25 AM                     Hey all, I just had a 2k osram go out on me last Friday night. The bulb only had 298 hours on it, luckily I had a spare bulb and didn't lose a show out of the deal. Since I've been at the theater, we haven't had a problem with this lamphouse burning out bulbs quick and was really surprised that was the problem. I've had really good results with the Osram bulbs. I shipped the bulb back to my supplier hoping for a free replacement bulb. We will see what happens, they said it would be 3-4 weeks before Osram would let them know one way or the other.  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 02-09-2003 02:19 AM                     What did the bulb look like when it was removed?  |  IP: Logged Ray Derrick Master Film Handler Posts: 310 From: Sydney, Australia Registered: Sep 2001 posted 02-09-2003 05:06 AM                     A very important thing about warranties that most people do not realise, is that a manufacturer's "warranty" simply means "what the manufacturer is prepared to do without an argument or a fight". Many countries or individual states around the world have a thing called "statutory warranty" which is laid down in law by governments. Statutory warranty is your protection under common law. If a manufacturer fails to rectify something that you believe is justified, even if the problem occurs out of the warranty period, you can often threaten them with legal action under statutory warranty and get results. So in many places you are not bound or limited by any warranty that the manufacturer may offer. If you ever have such a problem you should check with your local consumer protection authority as to your rights.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 02-09-2003 05:47 AM                     It doesn't get much better than this. This is an Osram 2000 watt lamp. As is clearly seen, this hasn't even been used. It was removed from the box and found this way. How it managed to be shipped and NOT blow up is beyond me. This must have happened right at the point when the UPS guy dropped it off. I don't want to think what would've happened if it was installed and THEN this happened!  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-09-2003 10:02 AM                     I have had several ones like that recently  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 02-09-2003 10:09 AM                     What brand were they?  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 02-09-2003 10:14 AM                        I wonder what would have happened if the electrode had fallen off during operation. Would the lamp have exploded or would the electrode have molten a hole into the glass so that the gas would simply have escaped?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-09-2003 10:27 AM                     They were Osram 2000HS  |  IP: Logged Erik Stevens Film Handler Posts: 10 From: Melbourne, Victoria, Australia Registered: Nov 2002 posted 02-09-2003 08:08 PM                     I spoke to my Osram rep today, and asked him about warranty. He gave me an XBO refund calculator. It has two discs, which rotate round each other. What you do is, have a look what the average service life for the bulb is, spin the disc around to how many hours the bulb has done. At this point it tells you how much of a rebate you will get. For example, the bulb that 'died' on me was a 3000W. Its average service life is 1500 hours. Mine had done 1438. This means that I get a 5% rebate from Osram. Better than nothing . Can I suggest that you get in contact with your local Osram dealer (if you are using Osram of coarse), and ask for one of these refund calculators.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 02-10-2003 08:29 AM                        Brad: Did you send those photos of the detached anode to Osram? What did they have to say? That lamp is a real souvenier item --- amazing it didn't explode with that rattling around inside!  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 02-10-2003 10:03 AM                        Given that the envelope would have been under very high pressure from the hot, expanded gas, I'd guess (assuming it was being operated horizontally) there is a very good chance that the sheer weight of the electrode falling onto the bottom of the envelope would have fractured the quartz and that the rush of cold air entering the envelope would then do the rest, i.e. cause a big bang.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 02-10-2003 10:14 AM                        Brad said that the lamp arrived that way, and had never even been used.  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 02-10-2003 10:16 AM                        But wouldn`t the internal pressure of the lamp make the xenon escape before outside air could get in? We once changed a 5KW Osram lamp in a Kinoton projector. The problem was, the adapter which is fitted on the - end to make it fit into the projector was stuck and wouldn`t come off. A colleague of mine put the lamp into its plastic box and wrapped blankets around it, then tried to wrestle the adapter off. Suddenly there was a hissing sound as the glass around the neck had become weakened. Since the lamp was securely inside the box and several layers of thick blankets, there was no danger, but we were surprised that the gas simply escaped through the crack without exploding the lamp. So I wonder under which conditions a lamp will explode and when it will simply leak. That sometimes happens during operation, too. I suppose you all have seen the effect when the lamp turns blue and black.  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 02-10-2003 11:34 AM                        John - sorry - I was speculating in response to Michael's hypothetical question, namely what would have happened if the electrode had fallen off while the lamp was burning. I too am not sure of the circumstances under which a lamp will explode or depressurise intact. I'd guess that the key variable is the strength of the seal which joins the envelope to the two caps (i.e. is it weaker or stronger than the envelope itself at the moment of failure?), and that this variable can be affected by how much pressure the lamp is under at the moment of failure. I'd further guess that a hot lamp is more likely to explode than a cool one, because the internal pressure would be a lot greater. In particular, surely the envelope will expand under the combined forces of heat and the expanding gas inside, thus strenghtening the seal at either end? If so, that would make it more likely that the envelope itself would fail under abnormal pressure (i.e. blow up) than the lamp would depressurise. Having said that, I've had a xenon explode on me when it was stone cold.  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 02-10-2003 02:15 PM                     Some time ago, I received an OSRAM XBO 1600 that had the anode still attached but it was sagging at least 10 degrees! I think there might be a material quality control issue involved.  |  IP: Logged

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