I have noticed this problem in 2 separate locations. In both cases they are computer monitors connected to a surge protector extension cord.
Every time the lights or fans are switched on or the fridge door is opened, the monitor goes blank for a few seconds.
Both extension cords with surge protection are of different brands. Monitors in both instances are of different brands.
I have a computer that is in another room and not connected through a surge protector that does not have this issue.
Does anyone has an idea why this happens and what can be done to remedy this?