To replace remove the old tube and bring it to the hardware store.
T8 fluorescent light not working.
As i said in the intro we noticed this happening over a 3 4 week period.
Aside from a burnt tube other factors such as a worn starter and loose or oxidized electrical contacts can contribute to a fluorescent light not working properly.
Like other lighting fixtures fluorescent light fixtures sometimes work improperly.
One clue that your ballast is the reason for a non working fluorescent light is the light bulbs struggle to turn on.
The new t8 led tubes are not working on my ballasts.
Also these dimmers will not work for incandescent fixtures.
I have 3 different ballasts and none of them work with the led tubes.
I got these t8 size led light tubes to replace fluorescent tubes.
How to troubleshoot fluorescent light fixtures.
A burnt out lamp is the most common reason any light fixture does not light.
You cannot mix fluorescent fixtures and incandescent fixtures on the same dimmer switch.
Diagnosing which problem you have and how best to tackle it is a fairly simple job that you can do on your own.
A good way to check that your ballast is the culprit is to turn on a voltage detector and hold it next to the wires supplying power to the ballast.
Or you can read the printing on the tube to identify the correct replacement type.
A fluorescent tube that is failed or failing usually has darkened areas near one or both ends of the tube.