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Replacing t12 ballast with t8 ballast, how to match up different wires?

The old T12 ballast has more wires than the new T8 ballasts. Which wires do I match up? Old ballast has 1black, 1 white, (easy enough), but it also has 2 yellow, 2 light blue, and 2 red while the T8 ballast has 1 black, 1white, 2 blue, and 1 red,

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Slinteriors
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SOURCE: Replaced Lamp to no avail

That problem is caused by two bad 100Uf capacitors on the PWB . you will need the manual to be able to get the chassis out and I dentify the correct board. Go to this link get the reapair manual they will give you free tech support and when they email your manual ask then if you can have Sonny for your free support. He can fix that chassis in his sleep, and he will tell you the exact capacitors that need to be changed and you set will be as good as new. heres the link
http://servicemanuals.vstore.ca/

Posted on Apr 18, 2008

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Slinteriors
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SOURCE: ballast replacement

Your set uses the Phillips UPH100W 1.3 100http://servicemanuals.vstore.ca/ 1amp bulb part number 6912V00006A which uses Ballast EUC 6913V0002A and the actual ballast isMB03CA part number 6871VSMB13F I would contact LG and give them these numbers. Is your ballast bad or is the BallastEUC bad? Let me know if I can help you further.

Posted on May 12, 2008

localwonder
  • 6784 Answers

SOURCE: NOS GE Ballast - Good?

Hi, The GE ballasts that you are referring to is OK. if stored correctly, they should be just fine.

Posted on Feb 25, 2009

ladywinn
  • 5138 Answers

SOURCE: where is ballast located

FOX has Lamp for $109.00 1-800-227-5369
Encompass Parts has Ballast $54.43 1-800-638-3328
Encompass wants $150.00 for lamp Your TV is a Samsung it will be on Right Hand Side of TV and I would Just Replace The Lamp First? What was your TV doing to begin with?

Posted on Jan 01, 2010

  • 167 Answers

SOURCE: Panasonic Pt-50LC13 . On the ballast on the upper

on the side you can see the metal pins goes from left to right green-yellow---red-brown

Posted on Dec 19, 2010

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1 Answer

I have a T12 fluorescent light fixture and replaced the bulbs and ballast. I have double checked all the wiring connections. I get the bulbs to light when I move the bulbs, but only for a second.


Your description sounds like the connectors for the tubes. Also RECHECK wiring. Different on newer ballasts. See below...

Turn off fixture, unplug, or deactivate fuse...

Pull out bulbs and the tin fixture cover/reflector.
Extract the bulb connector. Go to hardware and buy 4 more, and just replace them. The connections fail where the wire connects and the rigours of bulb replacements damage this piece. TONS easier to get new pieces.

ALSO!!!! many new (fancy schmancy) ballasts WIRE UP completely differently from the old ballast. Follow the wiring diagram on the NEW ballast. This detail trips up many.

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Plugged in to 220 volts now it plugged into 120 volts. I replaced all bulbs with new ones still won't come on. What is next?


Hello Jerry
your post was answered in your other post. Please only post once so that all the answers are in one place.
---------------------
There is more to it that just the bulbs. You have blown all the chokes/ballasts that supply the power to the tubes. Nothing is going to survive twice the recommended voltage.I found this from an old Fixya posting.

You probably have T8 ballasts controlling your lights which are electronic. Its pretty much a sure bet that these are fried and will need to be replaced. Open up the tray that is between the bulbs and write down the F32T8x? Number that is on the front of the ballast. The ? Will be the number of bulbs it is designed to run. As long as the number matches up you can just cut the old ballast out and it wire the new one in. Ballasts generally run ~ $20 a piece. Hope this helps!

You realise these tanning beds are bad for you? Get out in the sun with a good quality sunscreen.

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I pluged this into a 240 volt supply and all of the lights went out. I bought new bulbs still will not come on after I switched it over to 120 volts. What is going on please?


There is more to it that just the bulbs. You have blown all the chokes/ballasts that supply the power to the tubes. Nothing is going to survive twice the recommended voltage.I found this from an old Fixya posting.

You probably have T8 ballasts controlling your lights which are electronic. Its pretty much a sure bet that these are fried and will need to be replaced. Open up the tray that is between the bulbs and write down the F32T8x? Number that is on the front of the ballast. The ? Will be the number of bulbs it is designed to run. As long as the number matches up you can just cut the old ballast out and it wire the new one in. Ballasts generally run ~ $20 a piece. Hope this helps!

You realise these tanning beds are bad for you? Get out in the sun with a good quality sunscreen.

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How do I replace the Leviton Bi-Pin on a Linear Fluoresent Lampholder?


Take the end cap off the fixture case - unwire the old socket and reverse the process for installing a new socket.
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Rule #1: TURN OFF THE POWER AT THE BREAKER PANEL.
A fluorescent light ballast is a transformer that outputs a higher voltage than the input (120 volts). The electrocution hazard is very real.
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sounds like the lamp, try replacing that!!

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I have an ge proline magnetic t12 ballast it has two red leads two blue leads and two yellow where as my fixture has one red one blue and the hot and nuetral are wired through the other side of the bulb...


Need more information, how many lamps are in the fixture? The new ballast is for how many lamps? Basically you need to follow the diagram on the new ballast. If the new ballast is for a four lamp fixture one yellow gets capped and the other yellow goes to one side of each lamp on a two lamp fixture. Then on the other side one set either red or blue goes to the other side of the lamp one wire per lamp and the other set gets capped . Hopefully this helps parkeroc68_0.jpgparkeroc68.jpg

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There are three types of fluorescent 48" bulbs t 12, t8, and t5. they are not interchangable. if you have a fixture that has a t12 type ballast, it will not light up the t8 bulbs. you have to change the ballast to a t8 style. just to clarify, the number stands for 10ths of an inch in diameter on the bulb. a t12 is 1.2 inches, a t8 is .8 inch and a t5 is .5 inch.

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