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20w Metal Halide EOL Result

20w Metal Halide EOL Result

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Here's what the 20w Metal Halide that EOL'd currently looks like. Can't see it in this
pic, but looks as if there's a hole in the arc tube from what I could see

s-l1600~0.jpg WP_20191019_010.jpg WP_20191019_015.jpg youtube_-lAriqZGN-A.jpg

Light Information

Light Information

Lamp
Lamp Type:Metal Halide
Electrical
Wattage:20w

File information

File information

Download: Download this File
Filename:WP_20191019_015.jpg
Album name:suzukir122 / Lamps/ballasts
Keywords:Lamps
File Size:427 KB
Date added:Oct 19, 2019
Dimensions:2464 x 1384 pixels
Displayed:95 times
DateTime Original:2019:10:19 21:56:54
Exposure Bias:0 EV
Exposure Time:6532/1000000 sec
FNumber:f 2.4
Flash:Compulsory Flash
ISO:100
Make:Nokia
Model:Lumia 1320
Software:Windows Phone
White Balance:0
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-166165
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suzukir122
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suzukir123
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Oct 19, 2019 at 08:32 PM Author: suzukir122
Video before complete EOL: https://www.lighting-gallery.net/gallery/displayimage.php?album=1854&pos=3&pid=166162

Video after complete EOL: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-166164

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dor123
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Oct 19, 2019 at 10:19 PM Author: dor123
It is severally leaked. This is very common with CMH lamps. I don't know why.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

suzukir122
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Oct 19, 2019 at 10:28 PM Author: suzukir122
@Dor123, I don't know why either. I never thought the lamp would permanently EOL quite like this.
Before this occurred, it was cycling. Today when I flipped the switch on, it managed to strike
successfully, warmed up, color shifted but got very dim after that, then there was a very bright
pink/purple flash, loud *tink,* followed by an incandescent glow. Looked like the incandescent glow was from
the small electrodes. I freaked out, and turned the light off. Turned it back on and it did everything
seen in the second video I linked.

Interests:
1. Motorcycles, cars, Women, and Lighting (especially fluorescent)
2. Weightlifting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Lighting has ALWAYS been a passion of mine. I consider everyone on here to be a friend

Max
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Oct 20, 2019 at 08:53 AM Author: Max
burner leakage is a common failure mode of CMH lamps because PCA is gradually corroded (dissolved) by the pool of hot liquid salt during operation.
suzukir122
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Oct 20, 2019 at 12:57 PM Author: suzukir122
@Max, this lamp had previously been flickering continuously for about a year before all of this began happening.
Should I expect my two remaining 20w metal halides to act the same way before they EOL as well?
Side note... those two remaining metal halides have been working flawlessly ever since I bought them 3 years ago,
aside from taking forever to start during cold starts.

Interests:
1. Motorcycles, cars, Women, and Lighting (especially fluorescent)
2. Weightlifting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Lighting has ALWAYS been a passion of mine. I consider everyone on here to be a friend

Max
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Oct 21, 2019 at 11:02 AM Author: Max
Flickering could certainly be caused by a change in the lamp chemistry as the molten salt reacts with the PCA wall (more precisely, the release of aluminum iodide as rare earth additives are oxidized at the wall). If this is really what caused the instability you observed, then chances are that you'll also see this occurring with your other GE lamps before they reach EOL.
suzukir122
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Oct 22, 2019 at 05:45 AM Author: suzukir122
I'll keep a strong eye on how they act, and I'll keep you updated. They do flicker very, very slightly, but not noticeably.
I've just operated this EOL MH again to see what it would do, and it continues to do everything seen in the second video I linked.
However... on occasion, I keep seeing a bright blue flash from it. I have a strong feeling that bright blue flash is the arc
tube, but each time it happens, I've been too far from the lamp to actually see it.
Is it possible that maybe this lamp isn't permanently dead?

Interests:
1. Motorcycles, cars, Women, and Lighting (especially fluorescent)
2. Weightlifting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Lighting has ALWAYS been a passion of mine. I consider everyone on here to be a friend

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