Nintendo Monitor Questions

[JeepMonkey]

I recently purchased a non-working Mania Challenge machine.  It is in a Popeye cab.  I intend to convert it into a vertical mame machine running just a few games.

The monitor is a Wells Gardner 19K4903.  See pic below.






1.  I do not see an inverter board that the Nintendo cabs used.  Is it possible that this is not the original monitor and Mania Challenge uses a normal (not inverted) video configuration?

2.  The monitor is plugged into the 100VAC outlet at the bottom of the cab.  I want to do away with the 100VAC plug and transformer and use a standard 120VAC power strip.  Would it be ok to plug this into 120VAC?

[SirPeale]

1.  I do not see an inverter board that the Nintendo cabs used.  Is it possible that this is not the original monitor and Mania Challenge uses a normal (not inverted) video configuration?

That is not the original monitor.  Nintendo cabs used a Sanyo monitor.

2.  The monitor is plugged into the 100VAC outlet at the bottom of the cab.  I want to do away with the 100VAC plug and transformer and use a standard 120VAC power strip.  Would it be ok to plug this into 120VAC?

Only if you want to immediately blow the monitor up.

[JeepMonkey]

Thanks Peale.  I thought the Sanyo monitor was original, but not sure.

The WG 4903 will only only work on 100VAC?  The label on the monitor says it is rated for 120V at 100W. 

[Ken Layton]

The Wells-Gardner 4900 series operates on 120VAC and requires the use of an isolation transformer.  The way it is wired in your cabinet now has it operating outside of it's specifications (not good) on too low of voltage.

[Kevin Mullins]

requires the use of an isolation transformer. 

This is what Peale was refering to I believe when he mentioned blowing it up by plugging it straight into a 120V source.

As Ken said, that IS a 120V monitor BUT ..... you MUST use an isolation transformer.
In other words you can have power coming from your power strip into the isolation transformer and then the monitor powered from that transformer.

That 100V outlet is an isolation transformer, just a lower voltage output which was used on the Sanyo monitors. (and Sharp models too I believe)
Sure it "works", just not optimally.

[weasel-like_animal]

How would one go about hooking a 3-prong cord (like on a PC) to an isolation transformer? Where does the ground connect? I think this is what I need to do on my WG 25K7193 monitor. Any advice is appreciated!

[SirPeale]

How would one go about hooking a 3-prong cord (like on a PC) to an isolation transformer? Where does the ground connect? I think this is what I need to do on my WG 25K7193 monitor. Any advice is appreciated!

Neutral and hot would go to the output part of the isolation transformer, the ground tied to the rest of the grounds in the cab.