My first electric kiss

[Tronic]

The flyback powers the HOT right? Does that mean if you touch the HOT, you get the full load of the Flyback?

The HOT acts as a switch that provides a path for current to flow through the flyback's primary winding and the horizontal yoke. The voltage can be 130 Volts DC and have currents between 200mA and 1.5 Amps in large screen color chassis. It can peak at 4 amps but I am not sure any 19" arcade monitors hit that.

 

[EagleTG]

Not sure, but I know it felt harder than any 110 that I have gotten nailed with.

I've heard DC hurts WAY MORE than AC when we are shocked by it.

You know, I had an incident with a pinball a while back. I'm pretty sure it came off of the heatsink of one of the transistors powering the dot matrix display. I was leaning on the side of the cabinet (metal rails = ground), brushed the back of my hand against the transistor, WHAMMO. It was hot in the room, I was a bit sweaty at the time... Just enough to make a good path for electric. I was lucky, that was a path across my heart. I never blacked out, but felt the urgent need to sit down, sat there for about two minutes or so catching my breath. Slowly reached over, flipped the switch (to off) on the machine, and stopped working on it for the day. That electric hit hurt for about two hours.

I had a close call too, working on a monitor at one of the pinball repair parties... I felt a tingling, realized how close I was to the metal/ferrite side of the flyback. Swiftly but methodically moved my hand away from that area.

 

[RetroHacker]

I've heard DC hurts WAY MORE than AC when we are shocked by it.

It really depends. AC is nasty since it really tingles and messes with your muscles. One thing that really hurts is telephone line ring current. Seriously. A phone line, in idle, won't hurt you - you won't even really be able to feel it. But when it rings, it sends (IIRC 48vAC at a fairly odd frequency, 25hz? I don't remember), and that hurts like hell. Found that one out the hard way, many years ago, trying to twist together some broken off phone wires inside the wall with some uninsulated metal pliers, just as the phone rang.

-Ian

 

[xxstatic]

I touched right here. Wow, who would have thought it?

I just did the same thing a week ago to my Pole Position on the same spot, to make matters worse I was bare foot and standing on the bare concrete floor of my garage....I got a decent tickle out of it......

 

[djdaveofkc]

i got kissed and fell off the ladder leaning over the front side of a cruis'n 25" monitor. I'm still terrified to touch the flyback on any monitor with my hands.

 

[smalltownguy2]

I've gotten snapped by the telephone ring current before. That woke me up.

This morning I was pulling out a broken bulb from a shop light in my basement workshop. It's a halogen light, and it's been burned out for a few months now.

I pulled the bulb out, but there was a nib of the old bulb still melted/stuck to the side of the fixture. So I grabbed an eyeglass screwdriver to get it out.

*cue idiot music*

SNAP...the fixture was still on and I grounded the little screwdriver to the case. Yeah, that hurt.

But on the plus side, no need for the 2nd cup of coffee this morning. A little household 120 took care of that.

 

[orion3311]

It really depends. AC is nasty since it really tingles and messes with your muscles. One thing that really hurts is telephone line ring current. Seriously. A phone line, in idle, won't hurt you - you won't even really be able to feel it. But when it rings, it sends (IIRC 48vAC at a fairly odd frequency, 25hz? I don't remember), and that hurts like hell. Found that one out the hard way, many years ago, trying to twist together some broken off phone wires inside the wall with some uninsulated metal pliers, just as the phone rang.

-Ian

In my experience, don't ever strip phone wires with your teeth, especially if you have fillings. I got out of that bad habit VERY QUICK.

FYI - Phone ringer voltage is 90-100v I believe, standard (battery) voltage is 48v. They keep the lines energized no matter what to keep the copper from corroding.

 

[vintagegamer]

I don't want to ever join this club, buuuut...

Much like trackdays, I knew eventually I would crash. And I did. Twice.

LMAO- you know what they say, there are 2 kinds of riders..

Sincerely,

Veteran Rider of Suzuki Katana and Hayabusa..

 

[Jeff F]

FYI - Phone ringer voltage is 90-100v I believe, standard (battery) voltage is 48v. They keep the lines energized no matter what to keep the copper from corroding.

I work for a telco and back when phone lines were actually popular, we used to ring lines we knew other workers were working on. It was priceless when people realized what you were doing.

 

[Frax]

LOL...I was working in my Nintendo cab this morning and playing with color adjustments. Like an idiot, I had pushed up the paper bezel so I could see the reflection of the video. That's fine...the idiot part is that I then set my arm down directly on top of the monitor while I was hunched over with the screwdriver.

Didn't get shocked, but I about wet myself when I realized how close I was to it. Deeeeeep thouuuuughts, lol. "Maybe I shouldn't put my arm on the monitor while it's on!"

 

[SuperSprint]

The HOT acts as a switch that provides a path for current to flow through the flyback's primary winding and the horizontal yoke. The voltage can be 130 Volts DC and have currents between 200mA and 1.5 Amps in large screen color chassis. It can peak at 4 amps but I am not sure any 19" arcade monitors hit that.

I thought I read that the HOT case in a K4915 is ~1500V. I know that the manual has chart of TP voltages in the testing section, and the HOT is clearly marked "DO NOT METER".

 

[doon]

I work for a telco and back when phone lines were actually popular, we used to ring lines we knew other workers were working on. It was priceless when people realized what you were doing.

Yeah I work for telco's as well. Tons of fun to be had with ring voltage. Although I am the data side, we still have -48V gear. In our old NOC before the dedicated DC plant. was working on bringing up a small DC shelf. I accidentally crossed -50VDC to 208VAC. I let some magic smoke out of the machine, and the probe disintegrated in my hand. So I was called sparky for a while here.

 

[Zud]

I work for a telco and back when phone lines were actually popular, we used to ring lines we knew other workers were working on. It was priceless when people realized what you were doing.

I have been zapped by a phone line twice. During same repair the phone rang 2 separate times. That is a shock I do not want to feel again!

 

[cleverlyj]

i've never been zapped by a hot but i've been zapped by neck boards a few times when converging monitors. that's not too bad of a zap. more like a 120v shock.

 

[smalltownguy2]

Working a G07 in a frogger cab at Phetishboy's party yesterday. Had a drink in one hand, anode cap in the other.

You know the rest.

My hand still hurts today.

 

[resipsa]

LMAO- you know what they say, there are 2 kinds of riders..

Sincerely,

Veteran Rider of Suzuki Katana and Hayabusa..

the truth hurts you aint kidding. flhrc Harley and don't wanna join that club. I already joined the flyback, club 20ez also. f that shit they both suck!