Troubleshooting Fluorescent Ballast? - Electrical - DIY Chatroom Home Improvement Forum

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Old 12-13-2012, 06:10 PM   #1
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Troubleshooting fluorescent ballast?

A 3 lamp fluorescent fixture stopped giving light.

1st action = new tubes. Result = no light.

2nd action = verify input voltage. Result = 120v line to neutral.

3rd action = go to DIY Chatroom and ask if a procedure exists to verify the proper function of the ballast (besides the light tubes). Result = ???


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Old 12-13-2012, 06:15 PM   #2
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Change the ballast. The tubes don't light and you have input power. The ballast is bad unless you new tubes are bad. You could try them in a different fixture.

Standard fluorescent repair procedure.
1. Change the lamps. No light see #2.
2. change the ballast.


Last edited by joed; 12-13-2012 at 09:31 PM.
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Old 12-13-2012, 07:57 PM   #3
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4th action-change the ballast
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Old 12-13-2012, 11:13 PM   #4
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5Th action .,, Make sure the wiring diagram is match up to the tombstone connection and also use the correct lamps as it will listed in the ballast housing.

The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
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