1. Download our Official Android App: Forums for Android!

Fix lamp short circuit

Discussion in 'Off Topic' started by Rgarner, Mar 13, 2019.

  1. Rgarner

    Rgarner Android Enthusiast
    Thread Starter
    Rank:
     #147
    Points:
    98
    Posts:
    684
    Joined:
    May 9, 2017

    May 9, 2017
    684
    54
    98
    I have a,lamp that probably has a short circuit. Sometimes it goes out when it gets bumped or the surface it's on does. It could even be the floor. How do I fix this?
     

    Advertisement

  2. Unforgiven

    Unforgiven I didn't know there were cacti in Aruba.
    Moderator
    Rank:
     #1
    Points:
    4,238
    Posts:
    37,065
    Joined:
    Jun 23, 2010

    Jun 23, 2010
    37,065
    44,521
    4,238
    Male
    Douglas, MA
    Start by replacing the bulb to make sure it isn't that.

    If the bulb is OK, disassemble the the recepticle where the bulb sits and make sure the wires are securely seated and the insulation is in tact. Make sure any bare wires aren't touching each other. If you see any blackening or charring, then replace the entire cord. They are pretty cheap at any Home Depot, Lowes, etc.
     
  3. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    Start easy: be sure the bulb hasn't unscrewed a bit. We have a lamp that does that all the time.
     
  4. MoodyBlues

    MoodyBlues - Crazy peacock person -
    VIP Member
    Rank:
     #34
    Points:
    673
    Posts:
    4,248
    Joined:
    Jan 27, 2011

    Jan 27, 2011
    4,248
    2,608
    673
    Formerly Linux sysadmin and programmer
    /home/LosAngeles
    Slight correction, if I may? Start by replacing the bulb then unplugging the lamp to do the rest. :eek:
     
    dontpanicbobby and Rgarner like this.
  5. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    Technically, if it possibly has a short, I'd unplug it before even changing the bulb. If there is a short or loose wire and it's up in the socket, that could end up really kind of ruining your day. I mean you're supposed to get a charge out of life, but not like that. ;)
     
  6. MoodyBlues

    MoodyBlues - Crazy peacock person -
    VIP Member
    Rank:
     #34
    Points:
    673
    Posts:
    4,248
    Joined:
    Jan 27, 2011

    Jan 27, 2011
    4,248
    2,608
    673
    Formerly Linux sysadmin and programmer
    /home/LosAngeles
    I wrote it that way first, then went back and added the part about replacing the bulb. I figured, how else would you know if that's the problem? (Duh! You'd try it in a different lamp.)
     
    Rgarner likes this.
  7. Rgarner

    Rgarner Android Enthusiast
    Thread Starter
    Rank:
     #147
    Points:
    98
    Posts:
    684
    Joined:
    May 9, 2017

    May 9, 2017
    684
    54
    98
    It was just a loose bulb. I unplugged it first anyway. At least it's fixed, and thanks for all the answers.
     
    olbriar, MoodyBlues and rootabaga like this.
  8. Unforgiven

    Unforgiven I didn't know there were cacti in Aruba.
    Moderator
    Rank:
     #1
    Points:
    4,238
    Posts:
    37,065
    Joined:
    Jun 23, 2010

    Jun 23, 2010
    37,065
    44,521
    4,238
    Male
    Douglas, MA
    Always check the lowest cost replacement unit first. ;)
     
    Mikestony, olbriar and MoodyBlues like this.
  9. dontpanicbobby

    dontpanicbobby Android Expert
    Rank:
     #14
    Points:
    1,563
    Posts:
    13,194
    Joined:
    Dec 31, 2011

    Dec 31, 2011
    13,194
    8,439
    1,563
    Male
    Boston MA USA
    I was hoping you'd replace the cord and tell us how you did it. :)
    Glad it's fixed though.
     
    Mikestony and MoodyBlues like this.
  10. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    I had a hunch, glad it paid off. (Is that worth going back and marking it as a best answer?) ;)

    Just curious: is the shade on this lamp secured by friction rings on the bulb? The reason I ask is that is the design for the one we have where the bulb loosens. I suspect our brushing of the shade (as we reach under to turn it on) gently loosens it over time.
     
  11. dontpanicbobby

    dontpanicbobby Android Expert
    Rank:
     #14
    Points:
    1,563
    Posts:
    13,194
    Joined:
    Dec 31, 2011

    Dec 31, 2011
    13,194
    8,439
    1,563
    Male
    Boston MA USA
    rootabaga likes this.
  12. Rgarner

    Rgarner Android Enthusiast
    Thread Starter
    Rank:
     #147
    Points:
    98
    Posts:
    684
    Joined:
    May 9, 2017

    May 9, 2017
    684
    54
    98
    It has no shade. There was one but it got crunched. Now it's just a bare bulb. Rootabaga, you do get best answer.
     
    MoodyBlues and Mikestony like this.
  13. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    Thanks and thanks. Weird that the bulb loosened like that. Glad it was quick, easy and free. :)

    Oh, and tell Bobby not to panic, I have a lamp I have to rebuild because the top is loose. It’s a project, though, since the bottom has felt that has to be cut, so it might be awhile. ;)
     
    MoodyBlues likes this.
  14. olbriar

    olbriar  
    Moderator
    Rank:
     #9
    Points:
    2,013
    Posts:
    19,264
    Joined:
    Jun 19, 2010

    Jun 19, 2010
    19,264
    21,442
    2,013
    Male
    Land of Oz
    Sometimes it's not the bulb loosening but the contact at the bottom of the socket has lost it's spring like ability over time. Unplugging the lamp, unscrewing the bulb, and a gentle tug on the bottom contact so that it will continuously make contact with the bulb when replaced is the answer.

    Oh.. and the problem is not a short circuit but an open circuit.
     
  15. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    This thread reminds me of the story of the elderly lady who takes her car to the mechanic. He listens to her, gets in the car and sticks his head up under the dash, then slides back out, stands up and looks at her and says, “I see the issue, your dash has a short.”
    The customer says, “We’ll, then, young man, just lengthen it!”
     
    MoodyBlues likes this.
  16. rootabaga

    rootabaga Android Expert
    Rank:
     #16
    Points:
    1,473
    Posts:
    6,304
    Joined:
    Aug 11, 2014

    Aug 11, 2014
    6,304
    24,193
    1,473
    More or less IT, lots of hand-holding
    Crazyville, CA
    So I'm home with a virus, so I decided to tackle the lamp...after unplugging it. The issue is that the securing nut has come loose over the years, allowing the top to flop all over:

    Lamp_FlopTop.jpg

    So I cut the felt on the bottom:

    Lamp_Base.jpg

    After removing the shade support and bulb, I took the socket off on top and disconnected the wires from the socket, noting the polarity, as the hot lead has to connect to the center connector for the bulb; the neutral connects to the threaded part of the socket. If you're not sure about this, don't mess with it, it's not worth your life. If you reverse the leads, then any time the lamp is plugged in, you could get electrocuted by touching the socket.

    Anyway, then I put my hand in the base (through the cut felt) and pulled the wire back through the hollow pipe thread that goes into the socket holder, and then held the securing nut while I spun down the socket. After that I aligned the socket holder the way I wanted it and used a pair of needle-nose pliers to tighten the securing nut fully.

    Lamp_SecureNut_Details.jpg

    From there it was the home stretch: run the wire back through the hollow pipe thread, reconnect it to the socket, insert the socket in the socket holder, put the cap back on it, reinstall the shade holder and bulb, and put the shade back on.

    If you had to replace the cord, I would suggest buying an extension cord of the proper gauge and cutting off the female end, then using that as the new lamp cord. Far cheaper than buying wire and a new end. Again, however, the key to any of this is getting the polarity correct, because that can literally be a deadly mistake.

    Anyway, I hope that helps some.
     

Share This Page

Loading...