dirty /unstable power?

[dfsgsfa]

by turning household fan on AND off makes monitor and tv black screen for a split sec. computers and lights are fine( for now)

same with other fans i tested

 

is this an issue?

[Kanna]

3 minutes ago, dfsgsfa said:

by turning household fan on AND off makes monitor and tv black screen for a split sec. computers and lights are fine( for now)

same with other fans i tested

 

is this an issue?

For me this also happens but the monitors doesn't go black since they keep the power for some secs but the lights can flicker when turning on a vacuum cleaner or microwave etc

[Eighjan]

33 minutes ago, dfsgsfa said:

by turning household fan on AND off makes monitor and tv black screen for a split sec. computers and lights are fine( for now)

same with other fans i tested

 

is this an issue?

Sounds to me like the earthing/grounding of the mains is not up to par...

[dfsgsfa]

4 minutes ago, Eighjan said:

earthing/grounding of the mains is not up to par

earthing is safty measure for short circuit only

[Eighjan]

Yes - but if the wiring for it is suspect, it may not be doing the job efficiently...

 

Another option could be cable shielding/interference.

[LogicalDrm]

On 7/14/2020 at 12:31 AM, dfsgsfa said:

earthing is safty measure for short circuit only

Short circuit could mean that power jumps through you. Better call electrician to check on house powers.

[dfsgsfa]

1 hour ago, LogicalDrm said:

Short circuit could mean that power jumps through you. Better call electrician to check on house powers.

pretty sure not the case here.

if short circuit occurs and earthing works properly, the fuse will jump thus nothing should turn on