2. Look for warning signs that the ballast is failing.
Buzzing. If you hear a strange sound coming from your bulbs or light fixture, like a buzzing or humming noise, that’s often a sign your ballast is going. Dimming or flickering. No lights at all. Changing colors. Swollen casing. Burn marks. Water damage. Leaking oil.
What causes a ballast to fail?
Ballast failure is often caused by the surrounding environment—mainly heat and moisture. When it’s too hot or too cold, a ballast can burn or fail to start your lamps. Heat, along with continuous condensation inside an electronic ballast, can cause corrosion over time.
How long does a ballast last?
The ballast takes in electricity and then regulates current to the bulbs. A typical ballast will generally last about 20 years, but cold environments and bad bulbs can decrease this lifespan significantly. You can get a new ballast at a hardware store or home center and install it in about 10 minutes.
Does a bad ballast burn out bulbs?
The ballast itself can go bad, which causes lights to flicker or even appear to be burnt out, when in fact they aren’t. They require maintenance and energy to power, on top of the power used to light the fluorescent bulb. They are a large part of the equation when using fluorescent lamps.
How much does a new ballast cost?
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.
Can a fluorescent light work without a ballast?
In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
Why do fluorescent bulbs fail?
One part of the fluorescent lamp that might eventually fail are the electrodes (aka filaments or cathodes) that are located at either end of the lamp’s tube. When electricity flows into the lamp, those electrodes create an electrical arc from which spring electrons that flow through the gases inside the lamp.
Why does my fluorescent light come on when I touch it?
Usually it comes from normal background radiation. If one of the filaments is not working the normal background may not be quite enough. Touching the bulb will introduce a new potential source providing enough kick to get it started.
How do you tell if it’s the ballast or the bulb?
One probe of the multimeter should touch the hot wire connections, while the other touches the neutral wire connections. If the ballast is good, an analog multimeter has a needle that will sweep to the right across the measuring scale. If the ballast is bad, then the needle won’t move.
Will LED lights work with bad ballast?
Can LED lamps work off of existing ballasts? Yes, if they have an internal driver than can work off that ballast. Philips, for example, has designed a tube that is compatible with an existing electronic ballast.
Why does my fluorescent light work sometimes?
If a fluorescent tube blinks on and off-a slower and more distinct process than flickering-the fault may lie in loose wiring or in another component, called the ballast. The ballast is almost always to blame if the fixture hums during operation.
Why do fluorescent lights sometimes not turn on?
The fluorescent tube won’t turn on
No electrical power due to a tripped breaker or blown fuse. A dead or dying ballast. A dead starter. A dead bulb.
What are ballasts worth?
Most Valuable Ballasts
Depending on their age, and their casing, even if they have to be scrapped, ballasts can be worth a couple of dollars. According to current listings, if you can resell one that’s in fantastic condition, you can often get $13 to $20 for the average ballast!
