Fluorescent fixture gremlins?

Reply

  #1  
Old 02-24-18, 11:11 AM
B
Member
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 4
Received 0 Votes on 0 Posts
Fluorescent fixture gremlins?

Advice sought:

We have a kitchen fluorescent light fixture with two concentric fluorescent circular bulbs, 8 inch/22W and 12 inch/32W.

Last weekend we noticed both bulbs were out. I decided to upgrade to LEDs.

After installing the LEDs, the 8 inch lit up very dimly but the 12 inch did not light up at all. I figured it was a bad ballast, so I replaced the ballast. The symptoms were unchanged.

So today I returned the LED bulbs and came home with new flourescent bulbs. Now, the 8 inch lights up just fine but the 12 inch does not.

To summarize: two new flourescent bulbs, and a new ballast. Still no light from the 32W.

Is it relevant that there are two light switches to this fixture? (One at each end of the kitchen.)

Thanks

Ben
 
  #2  
Old 02-24-18, 11:26 AM
ray2047's Avatar
Member
Join Date: Mar 2006
Location: USA
Posts: 33,582
Received 13 Votes on 11 Posts
Are you sure the LEDs were made to be used with a ballast and not wired straight to 120v?
 
  #3  
Old 02-24-18, 11:31 AM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 13,808
Received 253 Votes on 221 Posts
Can you post what lamps you are trying to use? (links or pictures)
 
  #4  
Old 02-24-18, 11:59 AM
P
Member
Join Date: Feb 2016
Location: United States, Virginia
Posts: 1,513
Received 125 Votes on 99 Posts
If you replaced ballast and then used new fluorescent lamps and one of the two lamps work I'd say you have a bad lamp socket connection. The three-way switches have nothing to do with one lamp lighting and the other not lighting.
 
  #5  
Old 02-26-18, 08:12 AM
B
Member
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 4
Received 0 Votes on 0 Posts
Thanks each of you for your help.

The LEDs were supposed to work with a ballast, but I returned them so that's not the issue anymore.

The new lamps are traditional fluorescent circular bulbs:
8 inch
12 inch

Both the old ballast and the new ballast are TLE54. The bad socket connection would make sense to me, except the sockets are integrated in the ballast that I replaced. In other words, it is a new socket too.
 
  #6  
Old 02-26-18, 06:37 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 13,808
Received 253 Votes on 221 Posts
Did you check with a meter to make sure you have 120 volts at the light? Is either of the 3 way switches a dimmer?
 
  #7  
Old 02-26-18, 07:31 PM
B
Member
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 4
Received 0 Votes on 0 Posts
Neither switch is a dimmer. I have not checked with a meter; Iíll do that but probably not until later in the week. What might cause a voltage drop?
 
  #8  
Old 02-26-18, 08:01 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 13,808
Received 253 Votes on 221 Posts
I don't expect any voltage drop, but I would just want to make sure that there is 120 volts at the box before continuing.
 
  #9  
Old 02-27-18, 07:57 AM
P
Member
Join Date: Feb 2016
Location: United States, Virginia
Posts: 1,513
Received 125 Votes on 99 Posts
I had one of those round fluorescent fixtures and had problems with the lamps not lasting. The last time I got new lamps, right out of the box one lamp didn't work. I ended up replacing the whole fixture with a LED fixture.
 
  #10  
Old 02-27-18, 09:10 AM
CasualJoe's Avatar
Member
Join Date: Jan 2010
Location: United States
Posts: 10,763
Received 97 Votes on 87 Posts
The LEDs were supposed to work with a ballast, but I returned them so that's not the issue anymore.

The LEDs are probably designed to work off an electronic ballast and you have an old magnetic ballast. The best thing to do would have been to just replace the entire fixture with a new LED fixture.
 
  #11  
Old 03-02-18, 07:20 PM
B
Member
Thread Starter
Join Date: Feb 2018
Location: United States
Posts: 4
Received 0 Votes on 0 Posts
120v to the fixture. I guesss itís time for a new fixture!
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: