Monitor flickers when I turn my fan off

[[drunk] 2021 Giant Stance]

When I turn my fan off, which is the light/fan combo, I notice my TV goes blank then does the detect input thing....is this normal?

[Alchemist79]

Are you talking about a ceiling fan or case fan?

[[drunk] 2021 Giant Stance]

Ceiling fan

[_I_]

that means your ceiling fan and pc/monitor are on the same circuit
the monitor may be more sensitive to power fluctuations
when the ceiling fan is turned on power drops under the monitors minimum required for a short time

can be caused by poor wiring in the house, or failing circuit breaker (limiting current on the circuit)

or it could also be a ground loop issue, if they are not grounded properly

[[drunk] 2021 Giant Stance]

It only happens with the fan is turned off though

[Alchemist79]

A power surge protector should help.

[Azza ☠]

No it's dirty power spikes/surge/noise...

You need a power conditioner to maintain a clean flow of power to all devices, a surge protector plug won't do much. Your device is losing power due to the other draining it, then it surges back.

I had similar issues with my A/C. I also play the electric guitar (rock/metal) and have amp/effects, etc. Then have sub-woofer, surround sound, etc. They all add on the mains where was a bit dirty and affected each other. This affects sound quality and bigger devices can drain out others, specially when turned on/off.

I added a Furman PL-PLUS Power Conditioner, so each device has it's own power cable from that. The result was very clean power, manages a good power level for all, no interference between devices, and also great surge protection, etc. For high-end electrical and audio, I highly recommend investing it one, it will safe your expensive equipment and prolong it's lifespan.

That dirty power will damage your PC over time if it continues. The other option is to separate devices to different outlets, if your house has multiple power circuits available. Avoid using too many devices on multi-plug extensions.

You want isolated outlets - this eliminates interference or "cross-talk" between components.

[rotNdude]

How are you turning the fan/light combo off? If it's with a wall switch, the switch may also be turning power off to the receptacle that you have the video source for the TV plugged into. For example, we have a wall switch in our family room that switches the power off/on to the top half of all the duplex receptacles in the room. The bottom half of those duplex receptacles are powered on all the time.

[[drunk] 2021 Giant Stance]

Originally posted by rotNdude:

How are you turning the fan/light combo off? If it's with a wall switch, the switch may also be turning power off to the receptacle that you have the video source for the TV plugged into. For example, we have a wall switch in our family room that switches the power off/on to the top half of all the duplex receptacles in the room. The bottom half of those duplex receptacles are powered on all the time.

Monitor/computer plugged into back wall.

Switch controls the top plug on the wall near the door and the cieling fan/light. I'm sure they are connected somehow, now that I think about it.

[Slayer Seraph]

Hello,
I know this is old. But I am having the exact same issue at home!!
Whenever I turn off the fan in the room or fans around the house - the screen flickers - blacking out for a few seconds and returns. Audio also cuts off for the same duration.
My PC is connected with a 10 meter HDMI cable to an Onkyo AV Receiver. My TV is also connected to that AV-Reciever.
So whenever this black out flicker happens it happens on both audio and video.

It also happens occasionally by turning off/on certain lights or unplugging certain devices all around the house!!


TC - Did you manage to solve your issue? You didn't report back. Have you found a proper solution?


I have this for quite a few years and giving up. It recently reemerged after installing a ceiling fan in my room.

Please help guys

Some more detail:
My PC is located in 1 room.
My AVR and Consoles and TV are located in a separate room beyond the wall.
Their are in the same power line/ circuit.
But the issue also happens with some devices outside thar line all over the house.

I had florescent lights which caused the issues very frequently - so I replaced them all with LED lights. That alleviate and negated most of the flickers from lighting.
But I still get random flickers and especially from the fan.

I live in Israel so I may have some issues understanding and translating all the electrical terms.
I live in an old 1 story private house.

Please help. Thanks.

[FluffyPinkDecoyBunny]

As mentioned in a previous post - most likely poor wiring or things aren't grounded properly. Your best bet would be to get a power conditioner (this is not the same as a surge protector).

As said by Azza a few posts back in this topic:
You need a power conditioner to maintain a clean flow of power to all devices, a surge protector plug won't do much. Your device is losing power due to the other draining it, then it surges back.

Bad power can certainly cause odd issues in electronics. I've had store locations I did tech support for have constant registers fail in numerous fashions: loss of touch screen response, card reader failures, cash drawer failures. After multiple sets of equipment getting the same issues the store finally listened to me and got a line conditioner and the hardware failures stopped.

[[☥] - CJ -]

Aside from whats mentioned above..

You could look into a UPS to give clean power to your PCs devices while giving them backup power incase it happens again, but the UPS's continuous power should stop your PC from blacking out.

If your wiring has issues that may be the most inexpensive thing you could do.
Checking and or replacing the homes fuses, if possible, may also be an option.

[POTATOMAN]

i have a This Fan "http://www.sinbo.com.tr/en/product/sf-6710-fan" next my Laptop and its in the same Power Outlet Extender as my laptop and whenever i turn it on or off my Screen Blacks out for just a Fraction of a seconds , so i thought its has something to do with the electricity , so today i unplugged my laptop and turned the fan , and to my surprise my screen still flickered , I was dumbfounded and i cant think of a reason except a magnetic field but its about half a meter away form my pc , and im just

[[drunk] 2021 Giant Stance]

maybe ground issue

[BOT Retard]

let's not bump up a 5 year old thread k thanks.

[[drunk] 2021 Giant Stance]

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