Why do my bathroom lights need to be smacked to turn on?

Reply

  #1  
Old 06-05-20, 06:13 PM
J
Member
Thread Starter
Join Date: Nov 2015
Location: United States
Posts: 139
Received 0 Votes on 0 Posts
Why do my bathroom lights need to be smacked to turn on?

Stubborn bathroom lights https://imgur.com/a/WJ9sME1

These are new bulbs. Takes a few minutes or never to turn on otherwise half the time if I knock them a little they'll turn on. I've wiggled them in their sockets to make sure they're in place. What's usually the issue here?
 
Sponsored Links
  #2  
Old 06-05-20, 06:15 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 25,137
Received 487 Votes on 447 Posts
Well judging by the black ends, the bulbs are pretty clearly quite old. There could be a starter in there that is old and worn out. They look like a small aluminum cylinder. You just give it a turn and pull it out. They still sell replacement starters.
 
  #3  
Old 06-05-20, 06:48 PM
Join Date: Jan 2009
Location: Trumbull, CT, USA
Posts: 483
Received 10 Votes on 10 Posts
I can't make out the size from the picture (are they 4' or 2' lamps/tubes) if either they could be the wrong tubes for the fixture ( for 4' lamps they will be F40T12 or F32T8 same with the 2' that are F20T12 & F17T8) they will fit in the same fixtures however they may not work reliably or at all and if they light you will get severely shortened lamp life.

Also if this a rapid start system I would check to see if the ground is properly connected for proper lamp starting & safety.
 
  #4  
Old 06-05-20, 09:22 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 56,967
Received 824 Votes on 774 Posts
Newer tubes have less mercury in them and do not work well with older magnetic ballasts.
You can upgrade to an electronic ballast or consider replacing the tubes or the entire fixture with an LED equivalent.

When you smack the tubes you are jarring the pins in the socket causing a momentary disconnect.
 
  #5  
Old 06-06-20, 12:44 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 5,853
Received 275 Votes on 256 Posts
or consider replacing the tubes or the entire fixture with an LED equivalent.
Dont ever repair old fluorescent lights, get them converted to LED, fluorescent lighting is such old technology!
 
Norm201 voted this post useful.
  #6  
Old 06-06-20, 03:19 AM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: United States
Posts: 8,536
Received 173 Votes on 157 Posts
I agree with Xsleeper's assessment, but I think Marq's solution is the best.
 
  #7  
Old 06-06-20, 03:21 AM
M
Member
Join Date: Sep 2019
Location: Canada
Posts: 1,341
Received 132 Votes on 123 Posts
I would replace them with LED's.

Rewire the fixture to get rid of the ballast.
Also I would get dimmable LED's as they may be too bright for you and if they are then you can install a dimmer to control the light output.
Also I recommend the type that get power from each end instead of the type that have Neutral and Line wired into one end (tombstone)
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


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