06:33PM | 09/11/05
Member Since: 08/19/02
29 lifetime posts
I have a 150-watt high pressure sodium security light that mysteriously began cycling on and off about a month ago, after about three years of faithful operation.

Thought the photoelectric cell might have gone bad, so I replaced that.

No improvement.

I suppose my next move will be to try a new bulb, but these things are supposed to last much longer than this one's been in service.

Do these things have some kind of ballast or starter that might have gone bad?

Any ideas on what's causing this on/off cycling?


09:14PM | 09/11/05
Member Since: 04/12/05
15 lifetime posts
Yes, these lights have both a ballast and an ignitor (or starter). And this sounds to me like a bad ignitor. If you open up the fixture, the ignitor is probably a black cylinder a little larger than a 35mm film container, with three wire leads (if memory serves correctly, it's been a while).

Good luck!



05:51AM | 09/12/05
Member Since: 05/03/05
79 lifetime posts
One of the tattletale signs of a bad lamp in an HPS fixture is the cycling of the lamp.

Average life of the 150W hps lamp is 24,000 hrs. This is an average! Some last longer, some don't.

If the ignitor goes bad the lamp will not light at all. Same with the ballast. Some of the "cheaper" fixtures have the ignitor as part of the ballast. I have found that sometimes it is more economical to replace the fixture than to do the repairs after replacing a bulb.


06:26AM | 09/12/05
Member Since: 08/19/02
29 lifetime posts
Yeah, I think it's the bulb, whose behavior seems to fit the consensus here and on another board.

The lamp is a Regent from Lowe's. I've had a number of these and they've all performed well.

And actually, the bulb is closer to four years old than three.

Thanks, guys -- appreciate your help.



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Repurpose birthday hats to create a string of lanterns for your porch, patio, or garden. Cut the tip of the cone, punch h... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon