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Where is the defect?

  • Backstabed Tombstones

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Discussion Starter · #1 ·
Simple right? relamped 2X4 troffer shuts off when it's warm. I replaced the tar t12 ballast with an electronic ballast, switch on, smoke comes out ballast goes POP! lights come on. I checked the tombstones and saw no signs of arching, I don't know what I could have done wrong. It says "use only rapid start sockets" what the ell are those?
 

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Were they 120v ballasts on a 277 v system
 

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I think you may have a faulty ballast , the spec,s on the ballast should tell you everything needed including wiring change you need to do with the sockets if I remember right.
Did you leave the t-12 bulbs in or change to t8?
 

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five.five-six said:
Simple right? relamped 2X4 troffer shuts off when it's warm. I replaced the tar t12 ballast with an electronic ballast, switch on, smoke comes out ballast goes POP! lights come on. I checked the tombstones and saw no signs of arching, I don't know what I could have done wrong. It says "use only rapid start sockets" what the ell are those?
Remove electronic T12. Throw in garbage. Put in T8. Lamp with 750 t-8. Turn on light. Looks good. Customer likes. Do more. Make money. Easy.
 

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Discussion Starter · #7 ·
I think you may have a faulty ballast , the spec,s on the ballast should tell you everything needed including wiring change you need to do with the sockets if I remember right.
Did you leave the t-12 bulbs in or change to t8?

I left the T12s in. I almost changed him to t8s with new lamps but this guy is cheep.
 

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So everything is working correctly now?
 

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Discussion Starter · #12 ·
So everything is working correctly now?
Sometimes. The times the switch is off it works correctly. It's when you go to switch it on that it's not working correctly.

Initially when the ballast popped the lamps lit up. Obviously, see smoke hear POP! power down and recheck wiring. Lamps did not come back on. It's a Philips advanced ballast for (2) F40T12, standard replacement ballast ICN-2S40-N.
 

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Discussion Starter · #13 ·
Remove electronic T12. Throw in garbage. Put in T8. Lamp with 750 t-8. Turn on light. Looks good. Customer likes. Do more. Make money. Easy.

I'll admit, I don't do a lot of fluorescent repair. I did double check my wiring and I am at a loss as to why it went ka-boom. Could a shorted socket, tombstone, blow the ballast up?
 

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I understand you are trolling us but I have not installed a T12 ballast in probably 12 years. Well, other than HO.
 

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it sounds to me that you you got your wires crossed somewhere. wrong pattern on the multi -volt ballast? at ant rate, if you can find old pre-electronic ballasts, use them!:whistling2:
 

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Discussion Starter · #18 ·
2 lamp fixture, And I hate Walters wholesale now. I paid $28 for it at Walters, $18 at HomeDepot. And if I blow it up, HD will give me a refund.


Seriously though, I am at a complete loss as how this thing blew up. The original ballast had 1 black, 1 white, 2 yellow, 2 red and 2 blue. New ballast had the same. How do you screw that up?
 

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Seriously though, I am at a complete loss as how this thing blew up. The original ballast had 1 black, 1 white, 2 yellow, 2 red and 2 blue. New ballast had the same. How do you screw that up?
By not color matching, safe to assume it was dark right. :laughing::laughing:
 
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