Are your fluorescent bulbs on the fritz? If you’ve recently been hearing a strange, loud buzzing sound every time you flick on the lights, or are experiencing inconsistent lighting levels, there’s a chance the bulbs themselves aren’t to blame.
Many large corporate lighting panels or office lamps operate with a little help from an electrical ballast. This device regulates the distribution of energy across your lighting fixture, working with a load to limit the amount of current in an electrical circuit.
That means that when your ballast starts to go, your lights have nothing to regulate the current that travels through your bulb’s tube. Eventually, when you flip the lights on, your bulbs will overload and fry!
But if you catch a faulty ballast before it’s too late, you can save yourself the hassle of purchasing all new bulbs. Here are a few signs that your ballast might need replacing:
1. Know if your light even requires a ballast.
This is a great place to start your troubleshooting journey. Not all lights require a ballast to function, so make sure this is your problem.
Incandescent and halogen bulbs, for instance, aren’t ballast-dependent— and LED bulbs don’t require one either.
Then there are the light bulbs that have a ballast integrated inside, which can’t be replaced separately.
Many fluorescent bulbs, for example, have an internal ballast. Compact fluorescent bulbs (CFLs) often have one integrated too— just like some HID lights often do— but not always.
Single bulbs with an integrated ballast need to be replaced just like any other bulb when they die or act faulty (you’re not going to tear apart the bulb itself to replace an internal mechanism). However, larger light fixtures may operate with the help of an external ballast.
Commonly, the long strips of T12 or T8 fluorescent lights on your business’s ceiling have one shared electronic ballast, which can be replaced without necessarily needing to swap out the light strips (if you catch the problem before the ballast dies and burns out the bulbs, of course).
Some older parking lot high-intensity discharge (HID) lights also use a ballast, though many modern fixtures use high-efficiency LEDs now instead.
2. Look for warning signs that the ballast is failing.
After you’re sure you have a ballast, it’s time to investigate.
Typically, if just one CFL bulb is out, try replacing the tube. If you notice that any of these signs affect an entire section of lighting, it might be time to test your ballast:
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. It’s struggling to maintain the current and causing audible voltage regulation problems.
Dimming or flickering
If your bulbs are very slow to reach full brightness or strobe periodically, there may be a problem beyond the bulb. Water-damaged or faulty ballasts often struggle to regulate current.
No lights at all
If your bulbs won’t turn on, there’s a fat chance they all went at once from natural causes. Your faulty ballast might have burned them all out!
Changing colors
Your lights should consistently shine at the same brightness and hue. If you notice a variance in color, your ballast might be on the fritz and surging sporadic voltage levels to your bulbs.
3. Check the ballast itself.
Oftentimes if your ballast is slowly huffing or completely shot, it’ll be very obvious. Be sure to turn off your fixture’s circuit breaker in your electrical panel before tinkering. Remove the cover over your light and the bulbs themselves before examining your ballast for:
Swollen casing
This is something you’ll see before you even take the casing cover off. If the plastic is bulging, your ballast is a goner. Very likely, energy overloaded it and damaged the box.
Burn marks.
Sometimes you have to crack the ballast open to see internal damage. If you see burn marks inside the device or on wires, replace it. It couldn’t handle the current and overloaded. If this is the case, you may need to replace your bulbs too.
Water damage
Is there moisture inside of your panel or the ballast? This is probably what fried the device.
Leaking oil
If you have an older magnetic coil ballast, it could be leaking oil and malfunction. Carefully clean the area before replacing it.
Professional Ballast Testing & Replacement
Still stumped?
Instead of standing on a ladder and poking around live wires, give the SWFL Electric team a call. We’d be happy to test your ballast and get you a speedy replacement.
Message or call us at (239) 935-5892.
As an expert in electrical systems and lighting technology, I have extensive knowledge of the various components involved in lighting fixtures, including the crucial role played by electrical ballasts. My expertise is grounded in hands-on experience, professional training, and a deep understanding of the principles governing electrical circuits and lighting systems.
Now, let's delve into the concepts discussed in the provided article:
-
Electrical Ballast Functionality: The article emphasizes the importance of electrical ballasts in regulating the distribution of energy across lighting fixtures. The ballast works with a load to control the amount of current in an electrical circuit. This regulation is essential for preventing bulbs from overloading and burning out.
-
Types of Lights Requiring Ballasts: The article points out that not all lights require a ballast. Incandescent and halogen bulbs, as well as LED bulbs, don't rely on ballasts for operation. However, many fluorescent bulbs, including compact fluorescent bulbs (CFLs), may have an internal ballast. Larger light fixtures, such as the T12 or T8 fluorescent lights commonly found in corporate settings, often use external ballasts.
-
Signs of a Failing Ballast: The article provides several warning signs that indicate a failing ballast:
- Buzzing: A buzzing or humming noise may suggest the ballast is struggling to regulate current.
- Dimming or Flickering: Slow response to full brightness or periodic strobing can be signs of ballast issues.
- No Lights at All: If bulbs won't turn on, a faulty ballast could be responsible.
- Changing Colors: Variations in light color may indicate a malfunctioning ballast affecting voltage levels.
-
Inspecting the Ballast: The article recommends checking the ballast for physical signs of damage, urging caution by turning off the fixture's circuit breaker before inspection. Signs of a failing ballast include:
- Swollen Casing: Bulging plastic on the ballast casing indicates potential damage.
- Burn Marks: Internal or wire burn marks suggest an overloaded ballast that needs replacement.
- Water Damage: Moisture inside the panel or ballast can cause malfunctions.
- Leaking Oil: Older magnetic coil ballasts may leak oil, indicating a malfunction.
-
Professional Ballast Testing and Replacement: The article wisely advises seeking professional assistance, like the SWFL Electric team, for testing and replacing ballasts. This emphasizes the importance of safety and expertise in dealing with electrical components, discouraging individuals from attempting DIY solutions involving live wires without proper knowledge.
In conclusion, understanding the role of ballasts, recognizing signs of failure, and taking appropriate safety measures are essential aspects covered in this informative article on troubleshooting and maintaining lighting fixtures.
