Is this normal for a jamma conversion in a nintendo cab????

sk8ersublime

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Is this normal for a jamma conversion in a nintendo cab????

So I was removing my sanyo tonight from my Mario WB that has been converted to Double Dragon, because I'm going to cap it tomorrow and when I go to unplug the monitor I notice something strange.

The wire is plugged into the bottom of the cab, but then the wire is stripped back and also attached to 115v on the replacement power supply!???? Wtf?????

Is this normal? Does this mean my monitor isn't pulling the right voltage and could be screwed now? I have no idea why this would be done this way. Please explain somebody.

Also, my sanyo is a whore. It has a DK serial, and DK jr and Mario burn in. Lol.
 

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That's fine. They just tapped into the power cord for the monitor to feed the new switching power supply. It just means that the switching power supply is running off the 100v output of the Nintendo isolation transformer, but that won't affect most switchers. It's kind of ugly, but it's not hurting anything.

-Ian
 
So the power supply input says 115v, it is currently pulling 100v from the monitor power.

Will it be ok for me to run AC 120 directly from the block so I dont need to have the monitor wire spliced?

The monitor will still be getting 100v only, which is correct. But I don't want to fry the power supply either.
 
You can if you want to - just run 115vAC from the distribution block to the switcher, and splice the monitor cord back together. It'll definitely clean things up, and it'll reduce the load on the isolation transformer.

I don't think the reduced voltage is hurting the switcher - they're pretty tolerant. They just rectify the incoming AC straight off anyway. But overall, rewiring it would be cleaner and the correct way to have it set up.

-Ian
 
My DK had a switcher that was wired directly from the iso wires that normally go to the plug outlet for the monitor and marquee light.
It worked just fine but I rewired it directly to the terminal block so it now gets 120v.
I also replaced the plug outlet so I could plug my new Sanyo into it.
I had a Tovis monitor in it before.
 
Great! I just wanted to make sure that the 115v on the switch will be ok with 120v.

Wall voltage varies - we call it 120v, but if you check it with your meter, it's usually going to be around 117v in most cities. There will always be a variance - dips due to wiring losses, or varying demand on the grid.

Devices intended to be plugged into the wall will be marked as 110v, 115v, or 120v - but it all means the same thing.

-Ian
 
Most of those switchers also have a jumper to make them run on 220, I think they'll run on about ANYTHING if you adjust the output voltage with the knob.
 
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