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Inside moldy alto

Inside moldy alto

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I couldn't help see this wow tons of weird mold like spots and greenish hue in this hall way

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Filename:20160909_200011.jpg
Album name:veryhighonoutput / F40
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Keywords:Lamps
File Size:129 KB
Date added:Sep 10, 2016
Dimensions:2465 x 1386 pixels
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-125395
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Cool white 79
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Sep 10, 2016 at 06:29 AM Author: Cool white 79
That just looks wrong...Prob the worst I've seen yet. Wtf?
streetlight98
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Mike McCann


GoL Mike McCann 88219189@N04/albums
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Sep 10, 2016 at 07:45 AM Author: streetlight98
I want to find one of these and break it open and see what's actually inside there. Such a weird thing that only happens in these lamps.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

don93s
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Sep 10, 2016 at 11:06 AM Author: don93s
It must have to do with the quality of the starting aid coating inside, as some 34w lamp do it more than others. I've seen GE and Sylvania ones get pretty ugly as well.
wattMaster
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Sep 10, 2016 at 04:18 PM Author: wattMaster
How is mold getting inside?

SLS! <click

Alights
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USA (120V 60HZ)


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Sep 10, 2016 at 04:54 PM Author: Alights
It's not mold..more of a chemical reaction or holes being burned in the phosphor by the arc
RyanF40T12
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Sep 11, 2016 at 05:30 PM Author: RyanF40T12
Most common on the old Philips 34 Watters and some of the GE and a few Sylvania. I always liked it

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

don93s
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Sep 11, 2016 at 09:48 PM Author: don93s
Another thing that can happen is the coating turns yellow or brownish. It happened a lot on 34w GE's in the late 90's or early 2000's I think.
ace100w120v
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Sep 11, 2016 at 10:02 PM Author: ace100w120v
It did, and mercury would also condensate to make the moldy appearance. My old middle/high school had tons of the GE Watt-Misers and they all tended to age like that. They're mostly gone now for sure, mostly replaced with various Sylvania 40w lamps as of the time I graduated.
Flurofan96
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Sep 16, 2016 at 05:43 AM Author: Flurofan96
Wow never seen or knew a tube would do that

I will give LEDisease a taste of my shoe

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Sep 16, 2016 at 03:19 PM Author: BlueHalide
Ahh yes, I too wondered what caused this spotting at the ends. Whenever I retrofit an office building from the 80's or 90's with T12 troffers and 34w lamps installed, a good handful of them have this same issue. The GE halophosphate 34w lamps have been the worst in my experience, sometimes with more than twice the amount of whatever those black spots are covering the ends, the phosphor also tends to get very greenish yellow at this point too.
RCM442
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rcm442 rcm442 rcm442
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Sep 16, 2016 at 03:23 PM Author: RCM442
This is caused by I believe ions bouncing off the conductive coating during startup. Burning holes in the phosphor, causing this.

Linear fluorescent will never lose to LED!
I am not Anti-LED, as I have some in use at my house.
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RyanF40T12
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Oct 05, 2016 at 07:51 AM Author: RyanF40T12
Not so sure about the during startup part. I saw quite a few of these on 24/7 fixtures that never get shut off (no switch)

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

Lumex120
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105555521242365640724 UCM30tBQDUECOV6VeG5W87Vg zfarmadillo
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Oct 05, 2016 at 08:15 AM Author: Lumex120
I wonder if it is edible...?

Ok, sorry for getting off topic. I saw this happen in a few Philips Pl13 lamps at the old library too.

Any machine is a smoke machine if you operate it wrong enough.

veryhighonoutput
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T12


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Oct 05, 2016 at 09:29 AM Author: veryhighonoutput
Like blue cheese?

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

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