Who here has touched the nasty...

CapnCrunch

Member
Joined
Sep 16, 2009
Messages
187
Reaction score
4
Location
Maryland
...flyback on the bottom of the tube? My Ms Pac has had the coin box shelf replaced with a metal one and I went to remove it tonight. The piece of wood that seperates the coin area from the monitor is missing (I have a replacement) and when I lifted the shelf the metal came in contact with the back of the monitor....oops. I don't remember much but I landed on the other side of the room, soiled my britches a little and my hand has that electrical burn tingle.

So, who else is in the "I touched it." club?
 
I've hit the flyback while adjusting knobs and trying to see the front of the monitor at the same time. It's a mistake I only plan on making once.
 
i was adjusting a cocktail monitor and my hand hit the chassis and felt like it pulled me into the machine. i woke up about 50 mins later wet my pants and wound up across the floor!!!
 
I picked up a Tempest with a K6100. Apparently it had a crack that someone tried to epoxy, but missed a tiny bit. I had rebuilt the monitor and was adjusting the HV pot next to the flyback with a plastic screwdriver, when it suddenly shot out the tiny hole right into the back of my hand (about 24,000 volts). I let out a yell and my screwdriver went flying. My wife came to find me breathing hard and I was bleeding from the back of my hand (although that could have happened from my hand jerking into something sharp. I have a small scar there now). After I calmed down, I spent 30 minutes trying to find that screwdriver....
 
...flyback on the bottom of the tube? My Ms Pac has had the coin box shelf replaced with a metal one and I went to remove it tonight. The piece of wood that seperates the coin area from the monitor is missing (I have a replacement) and when I lifted the shelf the metal came in contact with the back of the monitor....oops. I don't remember much but I landed on the other side of the room, soiled my britches a little and my hand has that electrical burn tingle.

So, who else is in the "I touched it." club?


That's how the flyback got it's name!
 
was adjusting a few things on my space invaders, foolishly forgetting the monitor is mounted lower, pointing straight up, let the inside of my lower arm come into contact, and got a nice little zap! Had blood spots on my arm from the shock for about a week!
 
was adjusting a few things on my space invaders, foolishly forgetting the monitor is mounted lower, pointing straight up, let the inside of my lower arm come into contact, and got a nice little zap! Had blood spots on my arm from the shock for about a week!


Damn that's the same thing that happened to me when I was messing with the sound in my Burgertime. I stood up and the neck board of the monitor brushed the top of my arm and zot 3 nice bloody holes in my arm.
 
I got "warmed up" a little when trying to remove my original monitor from my Ms Pac that was shot. Shortly after that, the cab went to the local repair shop for the job. I still studder a little bit from the accident but I'm able to he-he-hide it better now. :)
 
You know, after all of the many monitors and television sets I've repaired over the years, I've never managed to get a "full zap" from a running set. Couple things I have managed to do, however:

Zenith console TV - tube type, 50's era. Had the chassis (big metal thing with picture tube mounted to the top) on the bench. Removed the picture tube to turn the heavy metal chassis over for a lengthy capacitor replacement. Reinstall the picture tube, test, find something else awry, remove picture tube, repeat. Test again, reinstall the tube, connect it up... tube lights up - awful dim, but working. Hissing noise. Notice that I never actually reconnected the anode lead, and it was hanging from a holder, two inches from the tube, arcing to the anode connection...

Computer terminal - 80's era 12" monochrome text terminal. Doing the usual "why no HV" dance - replace a part, reconnect, repeat... Get overconfident, go to disconnect the anode again, only to find out that apparently that cap I just replaced actually did bring the HV back - ZAP! That hurt, but it wasn't too bad, since it was such a small set.

Electrohome G07 arcade monitor - accidentally plug the video cable in off a pin. Cabinet has poor access, so I discharge the tube to avoid zapping myself as I fumble around to move the connector. Afterwards, I powered up the machine to a Fzzzzzzzth! Silly me left the screwdriver under the anode cap, jumpered to the frame with a clip lead. Blew the small fuse on the chassis, but no other damage.

And, of course, I've gotten bitten by the filter cap on a G07 chassis once, and installed a cap backwards on an exceptionally charred G07 (board markings gone) and was greeted with a nice hissing poof on powerup...

Actually, the most painful electric shock I can think of was that time I was tinkering with the phone line when was like 12 years old. I was using uninsulated metal pliers to tightly twist two hard to reach wires together inside the wall when the phone rang. That phone ring current is like 20Hz and it REALLY hurts - it twitches your muscles something awful. 120v wall current doesn't even hurt that much.

-Ian
 
I fortunately have not been bit by an arcade game yet, but BITD I used to check for misses in my old Chevelle by pulling spark plug wires at the coil one at a time while she was running; grounded myself once and never did it again! My arm hurt for days! :eek:
 
i hooked up an untested K4900 chassis to a tube recently. it came up when powered but it was dim so i reached around to turn up the SCREEN and ZZZZT! i got a really nasty shock when my hand brushed the chassis frame. i'm pretty sure the flyback is bad and is grounding out into the frame. got a nice little scorch mark on my pinky and it hurt for a good 24 hours like i'd burned it on the stove.
 
I got hit by the tube coming off the flyback on my computer space, it would have possibly thrown me out my front window, which was behind me at the time, if not for my massive old dr pepper machine which just happened to be behind me when i was working on the monitor, all i remember if feeling the hairs on my arm beginning to stand up and i tried to pull back as quickly as i could to get out of there, but i was too late, it occured in the blink of an eye, my thumb ended up getting the zap, i flew back and hit the dr pepper machine hard, i bounced off of it and on to the floor. thank god it did not land on me, this is one of the vending machines that can crush you. I think i screamed when it happended but everything went yellow until it was over. So im not too sure.

As for the posting on the phone line shock above, i agree fully on how much it hurts, i did the same mistake but instead of using the wire strippers,i was using my mouth to strip the wires, this occured back when i was 13, and just i bit down and began to strip back the wires,the phone rang, it felt like someone put a drill on my tongue and turned it on.

Rick.
 
Actually, the most painful electric shock I can think of was that time I was tinkering with the phone line when was like 12 years old. I was using uninsulated metal pliers to tightly twist two hard to reach wires together inside the wall when the phone rang. That phone ring current is like 20Hz and it REALLY hurts - it twitches your muscles something awful. 120v wall current doesn't even hurt that much.

-Ian

Hehe, I did this also at about 12, except I had some of the wires in my mouth while touching others to screw terminals in the phone trying to figure out the correct wiring. Well someone called at just the wrong moment and I was thrown across the room and had a swollen and partial blue tongue and lips for weeks. The metallic taste went away after just a couple of days. I got the phone working though only to have a phone guy eventually come into the house and cut my wires because back then you had to pay for every phone in your house and we were only supposed to have one. He did tell my Mom not to worry because he knew I would fix it as soon as he left which I did. Thus began a lot of phreaking phun for years to come.
 
Not sure if it counts but I pushed on the backside of a neck board while a game was running in fruitless attempts to fix the picture.... Finger met up with some solder side pieces and they quickly went into my skin....the shock was unforgettable, the smell of burning flesh and the pin holes in my finger tips is something that I'd like to forget but thank you for reminding me about it.

No touchy neck board solder side when monitor is ON.

P6120044.jpg
 
Who was it here who leaned forward to look at some wiring by the power supply while the game was on, and bumped his forehead right up against the backside of the uncovered neckboard? I remember him telling us about it, but not who...
 
I didn't get shocked but the emotional pain was pretty bad after I had just gotten my spyhunter running and the monitor looking good. Leaned in to check something in the cab, raised my head up and cracked the neck board in two. Tried to jumper the broken traces but eventually had to buy a whole new wg4900 chassis.
 
Who was it here who leaned forward to look at some wiring by the power supply while the game was on, and bumped his forehead right up against the backside of the uncovered neckboard? I remember him telling us about it, but not who...

lol it wasn't me who originally posted it, but i just did that two nights ago. Luckily I'm due for a haircut and I felt the fro pushing in before my forehead made full contact and pulled my head back in time.
 
No touchy neck board solder side when monitor is ON.

P6120044.jpg


Made that mistake once. ONCE. I was just talking to a buddy who bought his first vid over the weekend and I was trying to talk him off the ledge about monitors. He's read some of the horror stories.

I told him that I touched the neck board and if I wasn't so scared I probably would have shit myself.
 
Back
Top Bottom