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Wiring a usb outlet and ceiling fan on the same circuit Answered

In my daughter's house (in South Carolina) her outlets and lights are on the same 15 amp circuit. I installed an outlet with built-in usb ports. She has her Fire Stick plugged into one of the usb ports. Her ceiling fan is controlled by a wall switch knob with OFF, MAX, HI, MED, LOW options. When she turns the ceiling fan from one option to another, the Fire Stick cycles off and then back on. Any suggestions? Thank you.

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Downunder35m

13 days ago

Bad USB charger in the outlet, try a normal wall wart first.
If that works your problem is solved.
If it causes the same problem then your ceiling fan causes interference.
See what works and report back , then we see what needs to be fixed.

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lindablufftonDownunder35m

Reply 10 days ago

I finally got my daughter to test the wall wart (she lives in a different city from me). The Fire Stick works fine from the wall wart. However, she also tested it in a different usb outlet that was installed in the same room and had the same issue of the Fire Stick cycling off and on with the ceiling fan changes in speed. Do you think a new circuit for the usb outlets is the answer or is there an easier fix? Thank you so much.

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Downunder35mlindabluffton

Reply 9 days ago

I did some tests with the 5V warts I have around and my welder.
Only one, an old Nokia wart struggled when the welder was turned on or off.
And in comparison to the modern ones this Nokia is ancient...
I am starting to wonder if the power supply for the stick is the real cause of the problem.
Even the Nokia wart only caused a minor breakin for the voltage, like it turned on and off quickly.
Then I remembered that touch lamp I abandoned to the shed....
And sure enough, no matter where it was plugged in, it changed brithness levels without touch every time I activated the welder or switched it off.

The wires in the wall act like transmission lines for the interference...
One solution worth trying for you would be to invest in a power board with lightning and overvolt protection.
Most come with USB charging ports and connections for Ethernet and TV as well.
Apart from a better protection for your equippment these boards also have so called line filters installed.
The firestick could also get the interference from the TV through the HDMI connection!
I can observe this quite nice on my TV whenever I plug in my hard drive...

If you are any good at soldering you can also try to make a small USB filter in the hope the problem really just comes from the Firestick.
All you need is to place a 1000µF electrolytic capacitor parallel with the 5V and negative from the power supply.
Then add a little coil in series with the positive and another with the negative.
If you can't find some little coils in some old electronics you can just wind 7-10 turns with enamelled copper wire onto a nail - remove the nail when done please ;)
If that solves the issue then fine if not try a power board with protection.

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lindabluffton

10 days ago

I finally got my daughter to test the wall wart (she lives in a different city from me). The Fire Stick works fine from the wall wart. However, she also tested it in a different usb outlet that was installed in the same room and had the same issue of the Fire Stick cycling off and on with the ceiling fan changes in speed. Do you think a new circuit for the usb outlets is the answer or is there an easier fix? Thank you so much.