What causes a light ballast to go bad?
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Similarly, what are the signs of a bad ballast?
If your fluorescent lighting is displaying any of the signs below, it could be a symptom of a bad ballast:
- Delayed start.
- Low output.
- Inconsistent lighting levels.
- Switch to an electronic ballast, keep lamp.
- Switch to an electronic ballast, switch to a T8 fluorescent.
Also Know, how long do ballasts last? about 20 years
Just so, how do I know if my ballast needs replacing?
When you hear a buzzing sound coming from your fixture or the bulbs flicker or do not come on, check the ballast to see if it needs to be replaced. Turn off the fluorescent fixture's circuit breaker inside the breaker panel. Remove the lens cover from the fixture.
How much is it to replace a ballast?
A replacement ballast costs about $10-25 depending on capacity and brand. The bite is that an electrician trip charge (which includes 30 or 60 minutes work) is going to be $75-150 probably - for about 5 minutes work on each light fixture.