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Why do 120 vac home LED light bulbs flicker?

gary350

Well-Known Member
Bedroom #3 ceiling light fixture has 2 bulbs. After being on about 30 minutes they start to flicker. Both bulbs are 1100 Lumens and they don't flicker at the same time. They appear to go from 1100 to 900 lumens then 5 minutes later back to 1100. I checked wire nuts for back connection light still flicker. I swapped old bulbs for new 1500 lumens bulbs after 45 minutes they flicker, they appear to be 1500 lumen then 1300 lumen then 1500 again.

I learned to only have 1 bulb in each fixture and flicker rate changes, 1500 lumens to 1300 lumens then 5 minutes later back to 1500 lumens.

I thought it was a heat problem then I notice every time electric clothes dryer comes on some living room bulbs flicker but on other lights flicker. Living room bulb is 20 feet from clothes dryer it always flickers when the dryer comes on. When electric heat comes, living room and bedroom light flickers. When microwave comes on none of the kitchen lights flicker.

Relatives said there LED bulbs flicker also. Flicker is not noticed when TV is on because TV does more flicker than the LED bulbs.

I know sudden power surge can make the old incandescent bulbs have lumen dips.

LED bulbs seem to talk to each other 5 bulb bathroom fixture the bulbs take turns flickering. LOL

What else is going on that I don't know about?
 

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