Yeah, experienced workman speaking (ok, writing) here.. I got 25 kV from a monitor some years ago. I haven't forgotten that . But I got it adjusted, image size, position and brightness :haha:
Now I have a new monitor and I'm not opening this until I've tried everything else. About 3 years warranty left..

Yep, the monitor that shocked me was unplugged, too. It takes quite a long time for the tube & capacitors to discharge, up to a month! It can be helped, of course

Capacitors that are connected to mains - some of them are as large as 1,000 uF charged to 160 V - about 13 watts. The energy stored in high voltage capacitor (the one that connects to the flyback transformer) is about 1 W. Not much but you will feel it, and it may cause you to hit your head to a wall or something, resulting in more damage.

Hrm, I might add that I'm trying to repair four dead TV's I've gotten from friends and whatever, yea well the biggest capacitors in there are rated at 400volts!

This goes for the powersupply in your computer also, 400v there to...

So yes, if you aren't a trained professional you really shouldn't be in there (unless you enjoy pain...)

I might also add another point so you understand exactly how much power we are talking about, a few years ago I was with my father whom is an electrician, he was working on a 380v fuse box outside, it was also raining and we where standing in a pool of water.

He told me to help him unscrew one of the screws, I slipped and got 380v straight through my body and out through the feet, well this wasen't very plesant at all as you can get, well end of that story.

Now barley a year ago I was trying to fix an old AT 135w powersupply, I didn't have any fan inside it so I didn't know if it was on, but since the cover was of and it had been on for almost then minutes I figured I could touch the heatsink to see if it was hot, well, that I really shouldn't have done, the even more stupid thing is that I was holding in the frame of the PSU so I was grounded, well there was a short in the heatsink, the power travelled right from my left to my right arm, it was the worst feeling I've ever had I could literally feel how the current flowed through my body, and the bones in my shoulder became warm (they worked like two big resistances), when I finally got loose I couldn't move for a few seconds, then my dad came up and wondered what had happened, he was in the basement two floors below and could clearly hear me shout...
This is the clearly worst electrical shock I've ever gotten, I measured with a volt-meter and it "only" showed 115volts.

Compared to the 380v shock I got this was about 200 times worse, and touching a 220volt power chord I do quite often (I'm not very careful) but that only tickles a bit, it actually doesn't feel "bad" to touch it...

Well that's my essay for the day

True, in these countries using 230v, capacitors are usually 400v. They're always large enough to cope with mains power.

It's not the voltage that hurts, it's the power. So, with fuses being, say, 20A, it might tickle a bit :haha:

Well I think they infact where around 20a...

And sure, touching our horses (is it called fence?) which runs at 5000volts also only tickles a bit since the ampere is very low...

Most graphics card drivers have some sort of gamma, brightness & contrast options. Some monitors also allow adjusting video signal level.