Super Pacman Cocktail Restoration

[Gamble92]

Working on replacing the power supply in my Super Pacman cocktail I'm restoring and bought this http://www.arcadeshop.com/pdf/mappy_super_pac_burgertime_gorf_Bumpinjump_wizofwor_jrpac_power_supply_kit.pdf
From Arcade Shop after exchanging a few emails with Steven Gregory he said that I would hookup the monitor directly to the Power supply and would not need an isolation transformer.
However this sounded very dangerous to me as from what I know doing so can cause you to get electrocuted just from touching the control pannel.

So my question is should i follow his advice and hookup without and isolation transformer or follow this diagram when wiring up the monitor.
http://therealbobroberts.net/basic-ac.gif

Thanks in advance

[8BitMonk]

He's very knowledgeable, I'd trust his recommendation, but the original used an isolation transformer so I'm surprised he'd say it's ok to bypass. Usually that's a big no no. Did he give you a specific reason why it wasn't necessary?

[8BitMonk]

The instructions specifically talk about the monitor hookup and using A.C. directly. There must be some protection built into these, they don't appear to be like a typical generic switching power supply.

Locate the two A.C. power wires leading to the monitor. Find a convenient spot and tap the two wires from the new power supply to each of the monitor power wires.