I once moved into a new apartment, built a new PC, but noticed that every 30 or so minutes while gaming my monitor would turn off. It was just frequent enough to make gaming intolerable. One day I was plugging something in and moved my DisplayPort cable slightly and my monitor turned off again. Turns out it was too close to the antennas for the WiFi card I had; it was inducing a current in the DisplayPort cable and the monitor’s firmware didn’t know what to do so it just crashed! I moved the cable slightly further away and it never happened again.

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tverbeure 6 hours ago | parent [-]

Similarly, if you have one of those office chairs with a pneumatic shock, dropping down hard on the chair may induce an electromagnetic or ESD pulse that shocks the monitor.

There’s a video on YouTube about this somewhere and we were able to confirm their findings.

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reddalo 6 hours ago | parent | next [-]

Oh my god, so THAT'S WHY sometimes when I get up from the chair in my office, the screen flashes black for a brief moment?!

	▲	tverbeure 6 hours ago \| parent [-]
		Yup! I don't know what the exact mechanism is, but google "monitor flashes when I sit on my chair" and you'll find tons of hits.

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taneq 2 hours ago | parent | prev [-]

I have a Samsung Odyssey G9 monitor and it’s so sensitive to EMFs, it’ll blink off for a moment when I take my jumper off.