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Lamp Sockets: Electrical Repairs: DIY Electrical

Socket-mounted switch types are usually interchangeable: choose a replacement you prefer. Clockwise from top left: twist knob, remote switch, pull chain, push lever. Step One:
Unplug lamp. Remove shade, light bulb and harp (shade bracket). Scrape contact tab clean with a small screwdriver. Pry contact tab up slightly if flattened inside socket. Replace bulb, plug in lamp and test. If lamp does not work, unplug, remove bulb and continue with next step.

Step Two:
Squeeze outer shell of socket near PRESS marking, and lift it off. On older lamps, socket may be held by screws found at the base of the screw socket. Slip off cardboard insulating sleeve. If sleeve is damaged, replace entire socket.
Step Three:
Check for loose wire connections on screw terminals. Refasten any loose connections, then reassemble lamp and test. If connections are not loose, remove the wires, lift out the socket and continue with the next step.

Step Four:
Test for lamp cord problems with continuity tester. Place clip of tester on one prong of plug. Touch probe to one exposed wire, then to the other wire. Repeat test with other prong of plug. If tester fails to light for either prong, then replace the cord and plug. Retest the lamp.
Step Five:
If cord and plug are functional, then choose a replacement socket marked with the same amp and volt ratings as the old socket. One half of flat-cord lamp wire is covered by insulation that is ridged or marked: attach this wire to the silver screw terminal. Connect other wire to brass screw.

Step Six:
Slide insulating sleeve and outer shell over socket so that socket and screw terminals are fully covered and switch fits into sleeve slot. Press socket assembly down into cap until socket locks into place. Replace harp, light bulb and shade.

Required Tools

  • Screwdriver
  • Continuity tester

Required Materials

  • Lamp socket

Estimated Times

  • Beginner = 40 minutes
  • Intermediate = 30 minutes
  • Expert = 20 minutes

Approximate Cost

On a scale of one to ten, with one being inexpensive and ten being expensive, this project rates a two.

Tips and Techniques

When replacing a lamp socket, you can improve a standard on-off lamp by installing a 3-way socket.

Always twist loose strands of bare copper wire together before making connections.

Always check cord when replacing plug and replace if it is worn or damaged.

Make sure you check the cord, plug, light bulb and socket for loose connections before deciding the socket needs replacing.

Safety Tips

Make certain lamp is unplugged before attempting any repairs.

Make certain all connections are tight before plugging lamp in. Do not make any adjustments once plug has been inserted into the receptacle.

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