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Old 01-16-2013, 08:44 AM   #16
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8 foot fluorescent lamp trouble


The ballast is GOOOOOD!!! I verified it by wiring it up to a known good fixture!! (it was cold to touch when "on".)

So, now, I have bigger problems- its has to be voltage, right? I dont have a meter that measures 1000v....

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Old 01-16-2013, 12:17 PM   #17
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8 foot fluorescent lamp trouble


Since you know the ballast is good, you don't need to measure the output voltage. Just reconnect it in the right fixture, exactly the same way it was connected in your test fixture. Make sure the input power connections and the lamp socket connections are solid. If it still doesn't work, check voltage at the input (probes under the wire nuts). If it still doesn't work, then use a non-contact tester to check for power on the output wires - if they are hot and the fixture still doesn't work then it's probably a bad lamp socket.
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Old 01-16-2013, 12:57 PM   #18
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8 foot fluorescent lamp trouble


You don't need to measure 1000volts. You know the ballast is good so it has to be input power(120 volts) or the wiring between the ballast and the lamp holders. Or maybe a bad lamp holder.
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Old 01-16-2013, 02:03 PM   #19
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8 foot fluorescent lamp trouble


Quote:
Originally Posted by mpoulton View Post
Since you know the ballast is good, you don't need to measure the output voltage. Just reconnect it in the right fixture, exactly the same way it was connected in your test fixture. Make sure the input power connections and the lamp socket connections are solid. If it still doesn't work, check voltage at the input (probes under the wire nuts). If it still doesn't work, then use a non-contact tester to check for power on the output wires - if they are hot and the fixture still doesn't work then it's probably a bad lamp socket.
Whats the diffreence between the input wires and output? Is the input the white/blk? And output is red/blue?
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Old 01-16-2013, 02:44 PM   #20
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8 foot fluorescent lamp trouble


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Whats the diffreence between the input wires and output? Is the input the white/blk? And output is red/blue?
Yes
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Old 01-16-2013, 08:41 PM   #21
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8 foot fluorescent lamp trouble


May sound stupid, but make sure its grounded correctly? Ive known fixtures to not work because of poor or no ground, especially fluorescents!

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