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Ballast failure.

Ballast failure.

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One of the Jefferson ballasts I put in this light for the F48 slimline has already failed. First one bulb went out, then a while later the other one went out as well. I have a newer Advance ballast I can replace it with.

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Filename:IMG_1049.JPG
Album name:Bluesvan / Fixtures
Keywords:Lanterns
File Size:394 KB
Date added:Mar 13, 2019
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Date Time:2019:03:13 20:51:31
DateTime Original:2019:03:13 20:51:31
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fluorescent lover 40
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Westinghouse OV-25s at sunset.


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Mar 13, 2019 at 07:33 PM Author: fluorescent lover 40
Ouch!

Good quality things are awesome. Cheaply made things are not.

Silverliner
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Rare white reflector


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Mar 13, 2019 at 07:37 PM Author: Silverliner
The ballast is overheating and the thermal protection is kicking in.

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suzukir123
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Mar 13, 2019 at 09:04 PM Author: suzukir122
What's up with the Jefferson ballasts? This is the 2nd time I've read that a Jefferson magnetic ballast has failed.
First time I read about it, it was about a HPF Rapid Start ballast failing miserably, with added video of it occurring.

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Mar 13, 2019 at 09:34 PM Author: Bluesvan
Could it be because it was new old stock and sat a long time? It is one of these... https://www.lighting-gallery.net/gallery/displayimage.php?album=5123&pos=2&pid=157184
streetlight98
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Mike McCann


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Mar 14, 2019 at 04:36 AM Author: streetlight98
Hmm that really bites.

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

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Mar 15, 2019 at 07:13 PM Author: don93s
Slimline series ballasts seem to be hit and miss with all of the brands. A while back, I bought 5 NOS 80's Advance 2xF96T12 ballasts for work and within months, 3 were dead. I've also had Universals fail without warning, and that's without an EOL lamp.

As for Jefferson, I don't have much experience with them except for the two-lamp 40w preheat brick ballast, which from what I have seen, outlast the GE ones.
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suzukir123
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Mar 16, 2019 at 07:04 AM Author: suzukir122
Dang... so I'm guessing with Slimline magnetic ballasts, they'll either last you for the rest of your life, or they'll
fail abruptly/very prematurely? Not gonna lie, a magnetic Slimline failing in months is about as bad as LED's failing
within months, although definitely not as common as LED fails though.

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

streetlight98
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Mike McCann


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Mar 16, 2019 at 08:11 AM Author: streetlight98
Some magnetic slimlines just suck. Mostly when it comes to EOL lamps. In this case I think perhaps the capacitor was to blame and in that case it could equally happen to any magnetic ballast that's been sitting around unused for a long time.

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

ace100w120v
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Apr 28, 2020 at 09:48 PM Author: ace100w120v
I've heard F48 slimline ballasts really tend to be taken out by EOL lamps. On 8' versions, I know a bad/rectifying lamp on the lag/secondary side can also take a ballast out if left like that. It's hard to detect though as often the fixture simply operates slightly dimmer with a slight shimmering appearance. A trick whenever re-lamping slimlines in mass installs where they're on all the time is wait 30 minutes before declaring a bad ballast, as it can take that long for the thermal protection to reset itself.
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Mike McCann


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Apr 29, 2020 at 05:42 AM Author: streetlight98

I've heard F48 slimline ballasts really tend to be taken out by EOL lamps. On 8' versions, I know a bad/rectifying lamp on the lag/secondary side can also take a ballast out if left like that. It's hard to detect though as often the fixture simply operates slightly dimmer with a slight shimmering appearance. A trick whenever re-lamping slimlines in mass installs where they're on all the time is wait 30 minutes before declaring a bad ballast, as it can take that long for the thermal protection to reset itself.



I've heard the same thing. Perhaps that's why they were never really that common. The few T12 installations I recall seeing in large stores had f96 slimlines and f40 bipin lamps, even in the same style fixtures. The mill building I removed a bunch of old strip lights at had some f48 slimlines and every single one had a dead ballast dripping tar.

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

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Apr 29, 2020 at 11:03 PM Author: ace100w120v
Interesting. I'm not sure I even understand the purpose of F48 slimline when F40/RS existed- just instant start?
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Apr 29, 2020 at 11:58 PM Author: joseph_125
I think they might be been introduced shortly before rapid start F40 lamps took over. Another oddball one are the F40T12/IS lamps. They're basically standard F40s but with the pins internally shunted.
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Apr 30, 2020 at 04:55 PM Author: Bluesvan

Interesting. I'm not sure I even understand the purpose of F48 slimline when F40/RS existed- just instant start?


There is also F36 and F24 slimlines too which are even rarer. I have about 400 F48 Slimline bulbs, mostly Westinghouse from the early 1980s and some older ones too.
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Apr 30, 2020 at 05:16 PM Author: ramdude2014
May I suggest a fulham ballast? They work awesome!

Next stop gate T17!

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