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Faulty Osram U-Tube 40 W

Faulty Osram U-Tube 40 W


Today a box with Osram U shaped Tubes which I found on ebay arrived.
Bought them for my Schneider lantern to use it with nearly "original" equipment...
Sadly one of them was faulty as you can see.
Think its an manufacturing error, because the lamps are all new and the packages were still closed.
This tube does not work... :-(

Can anyone say, what is the production date (qD5)? Thanks!

And a Happy New Year to all of you!

DSC01553.JPG DSC01360.JPG DSC06985.JPG

Light Information

Light Information

Manufacturer:Osram
Lamp
Lamp Type:U-Tube
Electrical
Wattage:40 W
Optical
Color Temperature:25

File information

File information

Download: Download this File
Filename:DSC01553.JPG
Album name:duluxs / Tubes
Keywords:Lamps
File Size:134 KB
Date added:Dec 31, 2011
Dimensions:480 x 640 pixels
Displayed:429 times
Date Time:2011:12:31 15:29:51
DateTime Original:2011:12:31 15:29:51
Exposure Bias:0 EV
Exposure Time:1/40 sec
FNumber:f 2.8
Flash:Unknown: 1667432527
Focal length:6.3 mm
ISO:219021392
Make:SONY
Model:DSC-W30
White Balance:0
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Proteus
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Dec 31, 2011 at 09:30 AM Author: Proteus
This tube was working till it fell down on the ground or something other hurts it. If the phosphor is gone away like this one you can be sure the tube has lost it's vacuum very fast. Then it blows away the phosphor.
don93s
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Dec 31, 2011 at 11:01 AM Author: don93s
The stem seal is very delicate and it's possible it broke off if the box fell. A stem seal seems likely because of the sudden inrush of air to remove so much phosphor. If you shake the lamp, see if you can hear glass rattle inside the endcap.
Danny
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Dec 31, 2011 at 11:19 AM Author: Danny
Ohhh is there anything rattling about inside the Lamp cap?? Yes as Don says it looks like its took a fall, its shocked the glass stem (not damaged the insert) and broke off or cracked the Stem. Big shame though!! as these are LUSH... I bought a box of 12 of these from ebay (could even be the same seller?) and one had a loss of vacuum, but there was no Phosphor blown away like this... Glad you have got more though!!!
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Lee


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Dec 31, 2011 at 04:05 PM Author: TL8W
Your tube was made in November 1985.

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

duluxs
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Jan 01, 2012 at 04:42 AM Author: duluxs
Ok, thank you for your information. So it is older than I thought...

No, there is nothing to hear if I shake the lamp. And it was completely new for sure, because I opened the package which was still closed so far.
And I can´t even see a damage in the glass or at the stem seal.

Luckily I bought 5 of them

@Danny: Did you also buy yours in ebay germany? Are all of them the good old T12 40 Watt versions? In what lamps do you use them???
Danny
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Jan 01, 2012 at 04:49 AM Author: Danny
No i bought mine on the English Ebay (im in England) and they were £40 for 12 of them
TL8W
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Lee


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Jan 01, 2012 at 06:19 AM Author: TL8W
This vacuum loss through the pinch is unlikely to have been an "in-transit" breakage. It is possible the broken lamp was at best overlooked by the seller when packing them. Can you see if the electrode coil is intact? If it is not, the lamp could have been subjected to a gross overvoltage (in testing or otherwise) to the electrode leading to a heat surge cracking the pinch and allowing air to rush into the tube blowing away the phosphor.

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

don93s
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Jan 01, 2012 at 03:13 PM Author: don93s
I had a lamp fail similar to this while it was operating. I couldn't really see what caused it before I returned it for another. It wasn't subject to any trauma either.
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Jan 08, 2012 at 06:30 AM Author: RyanF40T12
I hate the U-Tubes. Super expensive, and too many have exploded in my hand during removal/install because the metal or plastic brace doesn't hold it well.

The more you hate the LED movement, the stronger it becomes.

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