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Reballasted!

Reballasted!

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Oh boy...this was a story!
So some relatives have this woodshop lit by these F96T12 slimline fixtures. A couple of them (the only two, on the same switch, how ironic!) went out at the same time in the same bizarre way: when power was applied they'd buzz, and when power was removed sometimes the lamps would flash dimly. We switched lamps around (90s GE 60w cool white Watt-Misers) and figured out it seemed the ballasts were bad. This happened in June of last year (2013). Finally last month (January 2014) I was there again and we just happened to go to the ReStore in that area. That trip yeilded some F96T12 ballasts. There were several but we picked up a NOS Jefferson with RUBBER insulated stranded wires and a WHITE painted case with blue printing, no paper label! Also bought an Advance electronic one that was the same size as a F32T8 ballast. We got them home and started working on the fixtures. After almost dropping the old Motorola "Lumi-Kon" ballast out of this one, (Those things are HEAVY!!!) we started putting in the other one, only to realize we'd forgotten how these things wire up! SO, apart came another fixture. I've never done anything with slimlines before this; only F40T12 4' rapid start fixtures and F32T8 electronic instant-start ones. So we got the NOS Jefferson ballast in there, the light reassembled...and guess what? All the light did was flicker lamps dimly! After measuring line voltage (thinking since both lights on the same switch went out the same way) it turned out we had a wire loose in one of the sockets. Then it finally worked. This thing runs the 60w energy savers substantially brighter, although that's not necessarily a good thing since this ballast doesn't list the 60w lamps. But, it works!

PICT0032~0.JPG PICT0063.JPG PICT0031.JPG PICT0023~0.JPG

Light Information

Light Information

Manufacturer:Jefferson (Ballast), GE (Lamps) Thomas Lighting (Fixture)
Lamp
Lamp Type:instant-start slimline
Shape/Finish:T-12
Fixture
Fixture Type:Striplight
Ballast Type:Instant-start magnetic
Location:Relatives' woodshop
Electrical
Wattage:2X60/75w
Voltage:120v
Optical
Color Temperature:4100K
Color Rendering Index:62
Physical/Production
Factory Location:USA
Fabrication Date:90s (fixture and lamps)
Application/Use:Lighting a woodshop

File information

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Filename:PICT0031.JPG
Album name:ace100w120v / Light Fixtures ("fittings")
Keywords:Miscellaneous
File Size:721 KB
Date added:Feb 08, 2014
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Date Time:2003:01:01 00:00:00
DateTime Original:2003:01:01 00:00:00
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Exposure Time:1/60 sec
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ISO:50
Make:Minolta Co., Ltd.
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Feb 09, 2014 at 07:03 AM Author:
Well recovered - that is a good result there. F96T12 are rare as anything in Australia now - we get quite excited when we find them!
xmaslightguy
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Feb 09, 2014 at 10:51 AM Author: xmaslightguy
Good fix!
I would eventually get some nice 75w lamps for that thing though...

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

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Feb 09, 2014 at 11:34 AM Author: ace100w120v
I suggested the 75w lamps for this one, but I'd otherwise use up the existing 60w ones first...then replace them with 75 watters...
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Feb 09, 2014 at 02:02 PM Author: rjluna2
Did you check the offending ballast if it is really a bad ballast after you have it all done?

Pretty, please no more Chinese failure.

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Feb 09, 2014 at 03:01 PM Author: don93s
I was baffled once by a 2xf96 fixture that would only light one lamp dimly. I checked the supply voltage and changed ballasts. Turns out that one of the plunger sockets was internally open even though no sign of burning or loose wire.

As for 60w lamps...I was thinking that they shouldn't hurt even the older ballasts if they say also F72T12 (55w). The lamp voltage is what the ballasts sees. If it can run a 55w then a 60w should be fine too.
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Feb 14, 2014 at 11:05 PM Author: ace100w120v
I think it DID list F72s but I don't remember for sure. It listed full-wattage lamps at some weird wattage though...I think it was like 73w or something...it was a really weird ballast.
No I didn't check the old ballast...
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Feb 15, 2014 at 09:53 AM Author: xmaslightguy
Yep as don93s said, it should be fine since it lists F72's

Weird that they'd list F96 @ 73w

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

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Feb 15, 2014 at 01:33 PM Author: ace100w120v
It was a weird ballast...really vintage too!
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Feb 15, 2014 at 01:51 PM Author: Alights
Did you get a picture ?

Magnetic ballasts and old school electronic only zone!  No T8 instant start

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Feb 15, 2014 at 01:53 PM Author: ace100w120v
I didn't...
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Feb 13, 2015 at 11:01 PM Author: ace100w120v
OK, now I'm being baffled by some slimline issues again. I scored four 8' slimlines today and both of the two I've brought home thus far won't light lamps, though the ballasts hum, and the lamps flash dimly once power is removed. I tried my only pair of 8' lamps back in the Lithonia fixture I already had (albeit with a broken/repaired with black tape plunger side socket) and same thing. I've seen this tons of times now, anyone know why? I now wonder if these removed ballasts were actually fine?
Granted, my only pair of slimline lamps are 60w, and I tried them in the unheated garage (about 45F).
Anyone have any ideas why this is? It'd be MUCH appreciated!
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Feb 13, 2015 at 11:46 PM Author: Alights
Bad caps possible. I had a mark3 do that it did run a F48 T12 dimly on the red side but that was all..I replaced it

Magnetic ballasts and old school electronic only zone!  No T8 instant start

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Dec 25, 2016 at 10:41 PM Author: ace100w120v
Still working as of December 2016. Silent and runs the crappy 60w lamps less flickery in the cold than the Lumi-Kons in the other fixtures. I guess don't trust any ballast whose name sounds like "Con!"
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