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-   -   Why do these old flourescent fixtures fail? (http://www.diychatroom.com/f18/why-do-these-old-flourescent-fixtures-fail-90916/)

darsunt 12-31-2010 09:32 PM

Why do these old flourescent fixtures fail?
 
We have a kitchen flourescent fixture that would sometimes not start on cold nights, other times take an hour or so to get started. The new fixture I replaced it with works fine.

Why do these old fixtures start having problems starting, especially when it is cold? Could I have just replaced the ballast?

Thanks

Gymschu 12-31-2010 09:38 PM

The problem is generally with the bulbs.......the type of gas used in the older flourescent bulbs was a problem in cold environments. Bulbs today are made with Krypton gas, I believe, and work much better in cold conditions. I think buying a whole new light fixture was the way to go.

Scuba_Dave 12-31-2010 09:39 PM

Yeah, usually either the ballast fails or the starter
Cost of the ballast, trouble to wire a new ballast in an old fixture you are better off with a new fixture
Did you try new bulbs ?

emolatur 01-01-2011 02:50 PM

Fluorescent lights don't start well in cold temperatures - especially the old "preheat" type. The name should help explain why.

This is not a sign of anything failing. It's just the way fluorescent lights are.

clashley 01-01-2011 02:59 PM

Quote:

Originally Posted by emolatur (Post 560401)
Fluorescent lights don't start well in cold temperatures - especially the old "preheat" type. The name should help explain why.

This is not a sign of anything failing. It's just the way fluorescent lights are.

You can get low temperature fixtures that are designed to start in colder temperatures. I use these in my garage, which is unheated. They do start up immediately even in cold weather, but it takes the bulbs a few minutes to warm up to full light output.

Thurman 01-01-2011 03:15 PM

Hey "clashley", I'm in Albany, Ga. also and do the same: I turn my fluorescent lights on in my shop in November and by June they are at full brightness :thumbup:.

awdblazer 01-01-2011 03:35 PM

ballasts
you can get electronic ballasts and they are great in the cold


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