Switch off but bulbs on(ish) puzzle

Tim+ · 2015-12-02T14:24:00+00:00

I've just replaced 5 33W G9 halogen bulbs in a light fitting with 1W G9 LED bulbs. As I swapped the bulbs one by one all seemed normal until I unplugged the last halogen at which point the other four LEDs started glowing dimly. Replacing the halogen bulb turned the LEDs off again. Now with all five bulbs in they all continue to glow dimly when "off" and work normally when on. How do I fix this? It's a one-way switch that only controls one light. It is next to a two-way one that controls the upstairs hall light. (I've just replaced all the halogens with LEDs in the upstairs hall light but it doesn't display this phenomenon.) Tim

Dec 02, 2015 22 Replies

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Tim+ 10 years ago

Simpler still, put one halogen bulb (out of the five) back in. Problem solved for the moment. ;-)

Tim

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PATRICK J GRAY 9 years ago

replying to Tim+, PATRICK J GRAY wrote: try installing better (more expensive) led lamps. i have had the same problem and switching to a better name lamp cured the problem first time out...lesson was learned.

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alan_m 9 years ago

Which is the wrong answer.

There is more than one design for powering LEDs from the mains and price is not the indicator of which design has been used. You could have switched to a more expensive lamp from a manufacturer you recognised and still would have had the same problem.

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