Here is a photograph that I took of some of the GE M1000 street lights on the East LA interchange before they were replaced:

https://www.lighting-gallery.net/gallery/displayimage.php?album=6272&pos=48&pid=239511

I probably figure that it had something to do with series circuits being too expensive for an upgrade to high pressure sodium according to one local collector. Oddly enough, all those street lights ran on remote ballasts. Interestingly, many of the 700W H35 mercury vapor street lights on the freeways that survived into the 2000s ended up getting converted to 400W H33 mercury vapor and the smaller lamps threw off the optics and light distribution. I think another factor was due to Hollywood’s movie industry wanting to film old timey movies where the freeways were lit with mercury vapor.

I have found a few European style 110V 60Hz and 120V 60Hz F40T12 preheat ballasts on eBay lately, but they are single lamp ballasts. If the original ballast is bad, You could probably use 2 of those ballasts in your fixture.

Here is what they look like:

https://www.ebay.com/itm/326285631061

https://www.ebay.com/itm/303790783741

https://www.ebay.com/itm/303790782147

Ideally, period correct 2 lamp lead-lag ballasts are preferable, but they sadly contain PCBs in their capacitors.

Very serious T-storms and pounding rain tonight. Lots of close cloud-to-ground hits. I think my neighbor's tree was struck. Due to the heavy rain, I don't think it caused a fire, but it's likely that tree is now dead. Lightning hit one of our 50+ year-old firs about three years ago, and it never recovered. It sits sad and dead amongst its living peers now...

Still pouring rain here too.

It got pretty violent towards the end of my video when I was closing the garage. You could hear a slight roar as the shelf cloud passed over me.
Also, the national weather service confirmed 3 F0 tornadoes touched down in Warren (my county) and Butler county areas... it's very likely that the
slight roar that I heard may have been an F0 tornado, but there was no damage in my area, at least none that I know of. The roar is definitely evident
in that video, and I kind of talked about it in video as well, not knowing that it might've actually been a tornado.
I'm thinking about posting that video... we will see... but if I do, it'll definitely either be un-listed, or on one of my other YouTube channels. lol
It wasn't really a storm chase though... I just rode my bike to the other side of the apartment complex, before shutting it off.

Larger files are allowed in the gallery and it is possible to link or embed those in a forum post.  Otherwise I'd try resizing them with an image editor (MS Paint would suffice).  If it's a 4' fixture it'll surely be possible to repair it using standard parts.  The specific make and model of the fixture isn't crucial information.  Do you believe the ballast is bad?  Do you care about using period components?  For instance finding a vintage preheat ballast may be more difficult than locating a newer preheat ballast which may be more difficult still than locating a modern rapid start or electronic ballast.

I have a GE 4w Ozone Lamp. It is the typical intermediate base style that has a "V" shaped filament with emissive ends, designed to be run on a simple current limited 120V or 240V supply. Here is a picture:

https://www.lighting-gallery.net/gallery/displayimage.php?album=lastup&cat=0&pos=1&pid=255921

As you probably can't see, the feed through leads are not molybdenum foil, and the pinch seal seems to be made while the glass was in a very flowy state, with all rounded edges. This almost completely eliminates quartz as a bulb material, right?

If this is indeed not quartz, then what is it made of? It definitely makes plenty of ozone, it stinks!

Any ideas?

@suzukir122:
Nice. LOL thats like a mini 'storm-chase on a motorcycle! Are you gonna post a vid on YouTube?

And yeah those QLCS storms can pack a real punch. (plus can have embedded tornadoes and/or supercells)
With rotation in the storm, not surprizing they activated the tornado sirens QLCS storms can spin up a tornado fast.

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A couple weeks ago I got something not severe, but rare & cool: Thundersnow!

Thanks for the reply- the fixture takes a 4' bulb, and is 53' L x 13" W.   I've tried a few different formats and can't get any pic to upload bc of the file size restriction...even though they don't exceed it.  The other side is white, and I'll keep trying

There was a 4' T12 fixture made called the HF-100, but that's not what you have.  That's not actually a 5' T17 fixture by chance, is it?  A photo of the other side would be helpful.  F100 sometimes refers to the 100W 60" lamps.