GROUND YOUR MVU4's!!

S

SSS

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Or any candy cab in general. This may seem obvious. All my candies are grounded, but I never got around to adding a wire to my old MVU 4.

I was working on my Super Neo 29 (which is grounded) and made contact with my MVU 4 (which was off but plugged in). Got a nice tingle of electricity. I grabbed my multimeter and the NCV went berserk around the mvu4. So I touched one end to the CP and the other to a empty third pin on the powerstrip. I got 120 VAC through the control panel, this drops to 60 when powered on. My other MVU 4 doesn't seem to output 120 when off, but does dump 60 through the CP when powered up.

edit: on a hunch I flipped the plug around (they are not polarized) and the 120 went away. It still outputs 60 V when on. I haven't seen anything blaringly wrong with the wiring, and I get no continuity between the end of the power cord and FG, so I'm a little perplexed as to what's going on.
 
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FairlanePhantom

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Bad for everything in the cabinets in general. Not to mention the annoyance of getting shocked every few seconds.
 
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I've checked 5 non grounded MVU 4's so far, and they all energize the cabinet with at least 60 V while powered on.
 
brentsg

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Actually it was pretty solid as puns go.

It's just that puns generally suck.
 
norton9478

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Yeah, my neo-29 is hot whenever plugged in and the main power switch in the back is on...

Gave me a nice jolt when grounding it........
 
brentsg

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Before I grounded my cabs, I managed to explode my Super Neo 29's power supply. I had my head inside at the time too, kinda freaked me out.

It was powered up and I had my head inside looking up toward the monitor chassis with a flashlight for some reason. In doing so I managed to press the JAMMA harness up against the cabinet chassis ... where there was apparently a bare hot wire exposed from being pinched against something sharp.

The power supply popped super loud and flames started to come out, then all the nasty smoke. Scared the shit out of me, and not something I generally recommend.

Not to mention that finding a replacement OEM power supply with all the controls and such on it was a miracle. I got lucky and someone importing cabs stuck a forklift into a Super Neo 29 and voila I had a new PS.
 
norton9478

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That's what I don't like about the inside of candies... too much bare metal....
 
OMFG

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FairlanePhantom said:
Missed out on the pressurized air to the face last time a cabinet wasn't grounded.
Click to expand...

It's based on the TV show Dengeki Iraira Bou. People got shocked on the actual show when trying to move with the stick around a maze.
 
chris1

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OMFG said:
Puts a whole new spin on "Irritating Maze".
Click to expand...


:lol::buttrock:


...
Yea my MVU 4. used to shock the shit out of me before I grouded it..especially when it was off>>
Walk up to it with shorts on and get zapped from the CP..ouch..:loco:..WTF..

Got weird when I touched the metal on the CP of my big red and leaned on the candies cp with my arm ..OUCH,WTF....Got tired of that happening,I had to ground it.
 
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chris1 said:
:lol::buttrock:

Got weird when I touched the metal on the CP of my big red and leaned on the candies cp with my arm ..OUCH,WTF....Got tired of that happening,I had to ground it.
Click to expand...


that's because your CP on the big red is actually grounded, and your arm made a nice path for the electricity from the MVU 4 to jump over.
 
norton9478

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SamuraiShodownSensei said:
that's because your CP on the big red is actually grounded, and your arm made a nice path for the electricity from the MVU 4 to jump over.
Click to expand...

When I was a kid at the pizza place, we used to dare each other to touch the metal on a pinball machine and then touch some exposed metal on the CP of a Big red...

Kind of reminded me of this...
VPlQ7y8AdyDISVNKfeoli6MJLaz8ddI202F6.jpg
 
ilazul

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SamuraiShodownSensei said:
that's because your CP on the big red is actually grounded, and your arm made a nice path for the electricity from the MVU 4 to jump over.
Click to expand...

yeah I did that with the mini cutes after you warned me, my arm was across the top of both.

getting cables to ground everything this weekend.

And I still need to check my MVU-4 batterys, probably just make a day of it.
 
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norton9478 said:
When I was a kid at the pizza place, we used to dare each other to touch the metal on a pinball machine and then touch some exposed metal on the CP of a Big red...

Kind of reminded me of this...
VPlQ7y8AdyDISVNKfeoli6MJLaz8ddI202F6.jpg
Click to expand...

yeah, but those just vibrated uncomfortably. kind of cheap.

I don't understand why most candies don't have 3 prong plugs on them. Do they not have those outlets in japan, or is every arcade over there in a basement with bare water pipes running behind the cabinets....
 
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chris1

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SamuraiShodownSensei said:
that's because your CP on the big red is actually grounded, and your arm made a nice path for the electricity from the MVU 4 to jump over.
Click to expand...

:buttrock:

And man does it like catch you off guard,sting when you catch it on the underside of your arm too..
 
chris1

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SamuraiShodownSensei said:
yeah, but those just vibrated uncomfortably. kind of cheap.



I don't understand why most candies don't have 3 prong plugs on them. Do they not have those outlets in japan, or is every arcade over there in a basement with bare water pipes running behind the cabinets....
Click to expand...

I'd like to know too..

How's it set up over there..

I was watching some show where they had arcade in a place/another country and they showed a pole sticking in a ground outside the place with a buttload of wires from the establishment hooked up to it..Not sure why there were so many wires going to the pole though..Musta neededa lot of grounding

So what happens when you have a line of Candies in a place ,none of the grounded.?
Water on the Floor?zap?
 
Comrade Porn King Mikhail

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Bumping this for a really silly question. So if you don't get any electrical shocks of any kind but still want to be on the safe side, what's the best way to ground MVSU4s?
 
FairlanePhantom

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Kiselgof said:
Bumping this for a really silly question. So if you don't get any electrical shocks of any kind but still want to be on the safe side, what's the best way to ground MVSU4s?
Click to expand...

ground it to an outlet with a ground pin, which is all current outlets by law - actually wired or not. If you're in a basement, you can run a line to a copper pipe like I did. Or you can do what I did at my old house with my cabinets in my living room, run a copper line out the window into a stake in the ground. Nothing in that house was newer than the mid 1940s, so it was my only option really.
 
brentsg

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Kiselgof said:
Bumping this for a really silly question. So if you don't get any electrical shocks of any kind but still want to be on the safe side, what's the best way to ground MVSU4s?
Click to expand...

Go to home depot and grab some green wire for grounding, and one of the 3 prong plugs that you can assemble (it's got screws to take it apart).

Make a piece of wire, wire it to the ground prong only. On the back of your cab there should be a ground post by the power cord. Attach the other end there. Good to go.
 
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