Why does my decorative lamp flicker after it has been on for a few minutes?

A lamp that flickers after warming up may have a loose bulb, an unsuitable dimming setup or a connection issue. Treat repeated flickering as a warning sign, especially if it is accompanied by heat, noise or smell.

Start with the bulb and fitting

1. Switch the lamp off and let it cool.
2. Check that the bulb is seated correctly and tightened only as far as recommended for that fitting.
3. Examine the bulb for a damaged filament, darkening or cracked glass, then test with a known-good replacement if one is available and compatible.

If the replacement bulb behaves normally, the original bulb was likely failing. If the flicker continues, look at the supply and controls next.

Check the control method

• If the lamp has an internal dimmer, use only the approved control method for that product.
• Do not use an external dimmer unless the product documentation specifically says it is suitable.
• Make sure the plug and socket fit is firm and that the cable is not under tension.

When to stop using it

Stop using the lamp at once if the flicker becomes rapid, the fitting feels hot, the bulb shows signs of damage, or the light cuts out completely. If the problem remains unresolved or safe use is uncertain, contact the retailer or store where the product was purchased.

To help prevent repeat faults, avoid frequent on-off cycling and use the correct bulb type and rating for the fitting.