Why Your Table Lamp Flickers and How to Fix It

Quick answer

A flickering table lamp is usually caused by a loose bulb, a failing switch, or an incompatible dimmer. Start by tightening the bulb and checking the socket connection. If that doesn't work, inspect the cord and plug for damage. Most flickers are easy to fix at home, but persistent issues may point to faulty wiring that needs a professional.

Check the Bulb and Socket First

The simplest cause of a flickering table lamp is a bulb that isn't screwed in all the way. Turn off the lamp and let the bulb cool, then remove and reinsert it firmly. If the lamp uses a push-in or bayonet base, make sure the pins align correctly. Also inspect the socket's center tab—if it's flattened, gently pry it up with a wooden chopstick to restore contact with the bulb's base.

Test the Switch and Dimmer Compatibility

A worn or dirty switch can cause intermittent flickering. Flip the switch on and off several times to see if the flicker changes. If the lamp is on a dimmer, confirm the bulb is rated as dimmable. Many LED bulbs, including the 12V G9 LED used in the Catkin Table Light, require a compatible dimmer switch. Non-dimmable bulbs on a dimmer circuit will flicker or hum. Replacing the bulb with a dimmable version or swapping the dimmer to a leading-edge model often solves it.

Inspect the Cord, Plug, and Wall Outlet

A damaged cord or loose plug connection can cause flickering that comes and goes. Examine the full length of the cord for cuts, kinks, or fraying, especially near the plug and where it enters the lamp base. Wiggle the cord gently while the lamp is on—if the flickering changes, the cord needs replacement. Also try plugging the lamp into a different outlet to rule out a faulty wall receptacle or loose wiring behind the wall plate.

When to Stop and Call a Professional

If you've tightened the bulb, tested the switch, checked the cord, and tried a different outlet but the flickering persists, the issue may be internal wiring or a failing socket. At this point, stop troubleshooting. Continuing to use a lamp with damaged internal wiring can lead to overheating or fire. Take the lamp to a qualified repair shop or contact the manufacturer. For custom, made-to-order pieces like the Catkin Table Light or the Junction Floor Light, the manufacturer can advise on service options and whether the lamp is under warranty.

Flickering lamp diagnosis checklist

• Symptom: Lamp flickers intermittently or continuously when turned on. Note whether flickering happens at all brightness levels or only when dimmed.
• Likely cause: Loose bulb, worn switch, incompatible dimmer, damaged cord, or faulty socket. Start with the bulb and socket—they account for most flickers.
• Corrective action: Tighten or replace bulb, clean switch contacts, swap to a compatible dimmer, or replace the cord. Each fix is simple and low-cost. Test after each step.
• Stop point: If flickering continues after checking bulb, switch, cord, and outlet, do not disassemble the lamp further. Take the lamp to a professional repair service or contact the manufacturer for warranty support.

Products mentioned in this guide

• Catkin Table Light: The Catkin Table Light uses a 12V G9 LED bulb with a 3000K lighting temperature. It is made to order and ships out in 5-6 weeks. If your Catkin Table Light flickers, check that the dimmer switch is compatible with its 12V LED system. Using a standard household dimmer can cause flickering. The manufacturer can provide dimmer recommendations.
• Junction Floor Light: The Junction Floor Light is an LED floor lamp with a 3000K lighting temperature, made to order in solid walnut or white oak. Flickering in a Junction Floor Light may be due to a loose connection at the head or base. Because it's a floor lamp, also check that the plug is fully inserted and the outlet isn't controlled by a wall switch that's partially dimmed.