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GE F40R

GE F40R

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Heres a pic of 1 of 2 of my NOS GE F40R lamps. Sadly, about 2 minutes after I took this pic, this exact lamp stopped lighting. Nothing. Just the ends were warm because of the cathodes. I even tried running it on a 32 watt T8 IS fixture. Nothing. I wonder what happend...Can anyone date this lamp. Fortunately I do have another one of these exact lamps that I'm testing in a preheat fixture this time. Hopefully it holds up. 😐

1485569866483-603254806.jpg 20170127_211010.jpg 20170120_194529.jpg 1480017865360349525840.jpg

Light Information

Light Information

Manufacturer:GE
Lamp
Service Life:New
Fixture
Ballast Type:Rapid start
Electrical
Wattage:40
Optical
Color Temperature:Red
Physical/Production
Factory Location:?
Fabrication Date:60s

File information

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Filename:20170120_194529.jpg
Album name:Cool white 79 / Fluorescent lamps
Keywords:Lamps
File Size:88 KB
Date added:Jan 20, 2017
Dimensions:2465 x 1386 pixels
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jercar954
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Jan 20, 2017 at 09:01 PM Author: jercar954
Manufactured the first quarter of 1965.

Preheat and T-12 fluorescents forever! Down with LED's and instant start T-8 fluorescents.

Silverliner
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Rare white reflector


GoL
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Jan 21, 2017 at 12:36 AM Author: Silverliner
It developed an air leak.

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Collector of vintage bulbs, street lights and fluorescent fixtures.

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Cool white 79
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Jan 21, 2017 at 03:34 AM Author: Cool white 79
Thats what I thought too. Never seen that happen to a fluorescent lamp though. Working 1 minute, turn my back on it, come back and its dead. I'm thinking it had an internal weak spot in the glass and maybe because of its age, once it got hot, that weak spot opened up.
The good news is, the other lamp held up for a half hour before I removed it. Cool color when lit. Not very bright though.
rjluna2
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Robert


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Jan 21, 2017 at 02:41 PM Author: rjluna2
That is shame that one of your bulb went EOL

Pretty, please no more Chinese failure.

DieselNut
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John


jonathon.graves johng917 GeorgiaJohn
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Jan 23, 2017 at 03:54 PM Author: DieselNut
Lots of older GE tubes seem to leak where the wires go through the glass.

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

Cool white 79
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Jan 23, 2017 at 05:23 PM Author: Cool white 79
Ok. What's strange here is that it happened while the lamp was in use. Not during shipping or storage. At least the other one still works.
DieselNut
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John


jonathon.graves johng917 GeorgiaJohn
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Jan 23, 2017 at 09:33 PM Author: DieselNut
Yep, I have had lots of F90T17s lose vacuum while in use and two F96PG17s did the same thing also.

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

veryhighonoutput
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T12


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Jan 24, 2017 at 05:48 AM Author: veryhighonoutput
It happens rarely to t12 but unfortunately it happens

T12/ t17 there's a reason they made heavy magnetic ballasts

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