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There are no markings on my ballast. How do I know what type of hps bulb I need?

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Search the manufacturers sites for the tv's model number and find the specs there

Posted on Feb 16, 2014

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2 Answers

I have a building full of 427G lights with 12-15 that won't work, but appear to have good bulbs. What is the issue?


Florecent or the yellow HPS bulbs? If HPS you have a bad bulb, or bad ballast. May be similar issues if florecent.

Mar 05, 2015 | Lithonia Lighting Home

2 Answers

Whats the difference in the ED17 & BD17 HPS light bulb


HPS bulbs and fixtures are normally designed to use bulbs specific to that fixture. Many times one type of bulb will work while a similar looking one will not. Make sure you use only the type specified on the fixture and you avoid the problem.

Nov 08, 2014 | Home

1 Answer

My ballast making a humming noise but will not light up my 600w hps bulb?? small bit of purple light in the bulb when turned on but not lighting up?? tried a 400w bulb in hood with the 6oow ballast and...


NANOLUX BALLAST 400W-1000W
NANOLUX HPS and MH electronic ballasts can be light up
E-MAIL :cly@sznumber.com
Skype:sznumberballast
NANOLUX HPS and MH electronic ballasts can be light up

May 18, 2013 | Sunlight Supply 400 Watt Hps Sunsystem I...

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Just bought 4 new 1000W Super high output HPS bulbs. Only one of them is really bright. The others are about 80% by eye. The brightest one is nearest to the transformer stack but the others don't...


A ballast for a 1000 240 volt fixture will lose a small amount of output over time , but should nt be too noticeable . I suggest you take one of the dimmer bulbs and install it into the fixture that has the brightest bulb in it now . If the new bulb is now the brightest of all , then you know your other ballasts have lost some intensity . I have also seen on some bulbs depending on the gas inside the glass( ex. HPS or Metal Halide) which gives off the different color , will take a while on initial start up , to burn at full intensity . It is also possible that you were given used bulbs which would explain the 20 percent loss in intensity . Good luck

May 30, 2011 | Sunmaster 1000w Hps Grow Light Bulb 1000...

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One of my two hps bulbs is brighter than the other one the bulbs and one of the ballast are new the other ballast is a year old


Hi .. it could be the ballast .. an easy thing to do to troubleshoot this would be to swap the lamps. If the problem follows the lamp. then that is the problem. If the pronblem stays with the fixture, then I would replace the ballast in that fixture.

May 03, 2010 | Sun System 600 Hps Cool Grow Light System...

3 Answers

400 watt grow light


ballast is weak ,or the bulb. i would never by the combo lights /use a hi pressure sodium for both vegative state and flowering.you dont necessarily need a MH..

Jan 03, 2010 | Garden

2 Answers

400 watt HPS


The ballast may not be the problem. The problem may be the ignitor (starter). If the fixture humms, then the ballast is most likely working. Ballasts (transformers) do not go bad very often.

Oct 12, 2008 | Sunlight Supply 400 Watt Hps Sunsystem I...

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