Both LED's and CFL's use switching power supplies built in the bulb
base. It is common for them to cause RF interference across a wide
spectrum. Their radiation limits are controlled on paper but not in
reality. When the bulb is in close proximity to a receiver the signal
can be strong enough to mask the remote receiver and make it fail to
recognize the intended signal. Like trying to hear a whisper when
someone is yelling in your ear. Stick with the standard bulb.
On 8/13/2013 11:17 AM, pethier@comcast.net wrote:
> LED light bulbs in garage door operators.
>
> The 75-watt conventional rough-service incandescent bulb in my garage-door
> opener burned out. Since one wants a vibration-resistant bulb, I replaced it
> with a 17-watt LED unit that gives the light of a 75-watt incandescent.
>
> The opener started working intermittently. Sometimes it would open but not
> close with the remote, sometimes it would close but not open. Sometimes it
> worked from inside the garage, sometimes only from outside. Only consistent
> thing is that the hardwired doorbell button in the garage always worked. All
> the wireless remotes including the keypad on the outside of the garage acted
> goofy.
>
> Took the bulb out completely. Everything worked fine.
>
> Put in an ordinary 75-watt that was handy. Everything worked fine but the
> bulb burned out fast.
>
> Put in a new rough-service incandescent bulb. Everything works fine.
>
> Obviously, I don't want to use LED lights in this operator. Somehow the
> circuitry in a multi-LED bulb does weird things with the radio in the
> operator. Anybody else ever see this effect?
>
> Phil Ethier West Side Saint Paul Minnesota USA
> 1973 Triumph Stag LE22439UBW "uncle jack", Sapphire Blue
> 2004 Suburban 8.1, Sport Red, the only automatic of the bunch
> 2005 Lotus Elise, Bordeaux Red Pearl
> 2007 Saturn Ion 3 2.4, Berry Red
> pethier@comcast.net
> http://www.flickr.com/photos/pethier
> http://www.flickr.com/groups/triumphtransamerica
> http://www.mnautox.com
> http://www.mntriumphs.org
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