Symptoms
- Lamp flickers when touched, moved, or bumped
- Flicker happens regardless of what's plugged into the same outlet
- Lamp may dim slightly before flickering
Likely causes
- CommonA loose bulbA bulb not fully seated is the simplest and most common cause of flicker.
- CommonA worn or corroded socket contactThe small metal tab in the socket can weaken its contact with the bulb base over time.
- PossibleA loose or damaged connection in the cordCords that flex a lot, especially near the plug or switch, can develop an intermittent break.
- PossibleA worn switch mechanismIn-line or lamp-body switches can flicker as their contacts wear.
What to do
- Tighten the bulb gently, making sure it's fully seated.
- Try a different bulb to rule out a failing one.
- Unplug the lamp and check the socket contact tab, gently bending it up slightly if it looks flattened.
- Flex the cord gently at different points while the lamp is on low light to find a section that causes flicker.
- Replace a cord that shows a clear problem area, rather than taping over it.
- Test the switch by operating it slowly and feeling for a solid click versus a mushy or inconsistent feel.
- Replace the lamp's socket, switch, or cord as needed, or consider replacing an old, inexpensive lamp.
Tools and parts
- Screwdriver
Replacement lamp cord and switchSearch: “lamp rewiring kit cord switch socket”
When to call a pro
Lamp repairs are generally DIY-friendly; an electrician isn't typically needed for a standalone lamp issue.
Safety
Use caution
Unplug the lamp before adjusting the socket contact or inspecting the cord.