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    foreverromantic's Avatar
    foreverromantic Posts: 177, Reputation: 1
    Junior Member
    		  
    #1

    Apr 29, 2017, 11:19 AM
    Led bulb problem
    I have two hanging lamps in my bathroom. I always used normal bulbs 40 Watt. Recently, I changed one bulb and put in an LED 40 Watt.
    When I turn the switch on... I hear a HISSING NOISE coming from the LED bulb !
    Is this dangerous and should I go back to the normal bulb.
    Thanks
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #2

    Apr 29, 2017, 12:56 PM
    I hope you mean 40 watt equivalent, not 40 watt?
    foreverromantic's Avatar
    foreverromantic Posts: 177, Reputation: 1
    Junior Member
    		  
    #3

    Apr 29, 2017, 01:02 PM
    Yes. 40 watt equivalent.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
    current pert
    		  
    #4

    Apr 29, 2017, 04:02 PM
    Try the bulb in another socket elsewhere in the house.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #5

    Apr 29, 2017, 07:18 PM
    A hissing sound is usually caused one of two things. The bulb is not screwed in all the way and you are hearing an electric arc. The other reason is the driver for the LED is not compatible with an old style dimmer. Some LED bulbs can be dimmed some can't.
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