Monitor still on when the monitor cable is unplugged?

Question

So here's what happened,

I work in a movie projection booth and we have a portable monitor that can be hooked up to the big movie projector via a main cable and a data transfer cable and a monitor cable.

Usually I unplug the monitor cable of the portable and still leave in the data plugin and the main plugin to the projector when i'm done with it to save electricity.

Usually as soon as I unplug the monitor cable, the monitor goes off as expected.

But yesterday I was installing a new lamp for the projector. I unplugged the monitor plugin, I'm kind of sure it went off and I was working on something else for a few seconds, then out of the corner of my eye, I noticed it was still on, so I went to pick it up to get a better look because it was covered by something else. Then it turned off just as I was about to pick it up. It was maybe 20 seconds~one minute that it was on for when I unplugged its monitor cable.

I felt perplexed because I double checked that I had indeed unplugged the monitor cable. I thought there may be a "ghost" around the area giving off some sort of highly charged electromagnetic energy thus causing the anomaly.

If its an electromagnetic entity, how should I deal with it in a safe manner?

Any thoughts on what might have happened?

Answer 1

This phenomena is due to the charge stored in the transistors n capacitors of ur monitor. depending on ur monitor the number may vary from few 1000 to few million. All that charge left in the circuit will discharge as light when the external potential is removed. This is perfectly normal n happens wid my lcd monitor too.

Answer 2

This is totally normal. Don't worry, There was just still a bit of electric pulse left in the cord or the monitor. Causing it to stay on for a bit. If it was a true ghost giving off an electromagnetic entity, then it would of stayed on for quite some time until the spirit left your presence. No need to get serious. Things like this happen all the time to me and everyone, they just don't realize it.

Answer 3

not ghost related