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Question about StarTech.com CCTUBEGN 12.5''TUBE Fluorescent Lamp Kit

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How to replace a tube holder or ballast

How do I replace a tube holder or ballast in a florescent light?

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You can replace a ballast or tube holder if you're fairly familiar with wiring. 1) Turn off the power to the circuit. 2) Remove the tube and the cover plate that conceals the workings. 3) Disconnect or cut the wires to the tube holder or ballast and remove. 4) Strip 1/2" of insulation from the ends of the wires. 5) Mount the component and connect the wires with wire nuts. 6) Replace the cover and tube. 7) Turn the circuit back on. 8) Turn the switch on.

Posted on Jan 18, 2006

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What is a ballast?

A ballast keeps a tiny charge running into devices that would otherwise need to "warm up" in order to function properly. Non-flicker florescent lights use a ballast so that they come on right away when you flick the switch.
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Maintenance

Generally you can't run ECO or ALTO tubes (less mercury) in fixtures meant for regular Rapid Start/ Preheat tubes. Other than that Old tubes near end of life sometimes do that.
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Someone told me to replace something called ''ballast'', what's that?

a ballast is like a transformer, as an example, florescent lights require one between the power supply and the tube.
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The labtop screen is not lighting up I had it checked by A technician and he said the video is gone however it is made up to the mother board is this correct

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I HAVE AN AUDIOVOX LCD WITH SOUND BUT NO PICTURE.HOW DO I FIX IT .WHEN I TRY TO GET INTO THE MENU I CANT SEE ANYTHING

I strongly believe that one of two things has happened:
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2) One of the florescent tubes has failed taking out the lamp ballast.
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The florescent light stopped working. Changed the tube and and starter and it still isn't working.

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Vizio television screen flickers like a strobe light

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Hussman DCCG Freezer

are they the florescent tube type?? i suspect that the ballast went bad
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When to replace

Inside a fluorescent light, electricity is delivered to a ballast, which sends a spark through the mercury-vapor-filled tube (or bulb), creating light by activating phosphors that coat the inside of the tube. If any of the components are faulty, the light won't work right. Once you pinpoint the problem, most fixes are very easy. Remember to turn off the power first! Old bulbs blink off and on just before they die; repairs are often simply a matter of replacing the tube or bulb. This problem may also be occurring because of poor contact between the pins at the ends of a tube and the tube holders. If the pins are bent, use needle-nose pliers to straighten them. Clean up the pins and socket contacts with fine sandpaper, and brush away residue. Though gray bands at the ends of tube are normal, black bands indicate that the tube needs to be replaced. If only one end is dark, turn the bulb end-for-end. If the tube is new and these fixes don't work, you may have to replace the starter or ballast. Some fixtures ("A-rated") are quieter than others are, but most fluorescent lights have a slight hum. If the sound seems too loud-- or if you can smell electrical burning-- shut off the power. The ballast is probably either the wrong type, improperly installed, or defective. Replace it or call an electrician. Brand new tubes tend to flicker, as do bulbs that are cold. If an old tube still flickers after it has had a chance to warm up (or after you've warmed up the room), rotate it a couple of times in the tube holders. Try cleaning the tube's end pins. If it still doesn't work, replace it. If only the ends of the tube glow, either the starter or the ballast is defective. Replace the starter, then the ballast.
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