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Re: [Shop-talk] LED light bulbs in garage door operators

Subject: Re: [Shop-talk] LED light bulbs in garage door operators
From: Mark Endicott <>
Date: Tue, 13 Aug 2013 11:47:57 -0500
References: <> a=KiVbQdkf6L0A:10 a=eVorbOOLNdEA:10 a=zZKT3jqqOw0A:10 a=8nJEP1OIZ-IA:10 a=V6f-GIhDAAAA:8 a=CdVwskkGjWYA:10 a=C_IRinGWAAAA:8 a=JAralIE_AAAA:8 a=DLXO72i6AAAA:8 a=AFAgp7RTAAAA:8 a=zOoktvdPAAAA:8 a=lLEe_dU4ygAaSO-IT6YA:9 a=wPNLvfGTeEIA:10 a=J0aUVQLP0FIA:10 a=m3MdUl94G8cA:10 a=si9q_4b84H0A:10 a=XKywMG_M2SIA:10 a=R5gpiK+HJ/bna/IrAbEdxw==:117
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
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, 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
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