Virtual on Help

sparky5693

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Just picked this one up, and unfortunately the move must have been pretty hard on it. Blue side worked when I picked it up, but it's playing blind now.

Pink side is giving me a voltage too low warning on the screen (knew about this beforehand).

Can anyone give me a few tips on how to proceed? I was thinking about swapping the monitor chassis to the blue side.
 
"voltage too low" is pretty self-explanatory I think. Get your multimeter out.

You need to take a closer look at the nonworking monitor. Is everything seated correctly? Do you have neck glow?
 
Non working monitor seems completely dead... no neck glow that I can see. I'll play with the connectors more, maybe I'll get lucky. Usually I can "hear" a monitor that has power, and this one I hear nothing.
 
Non working monitor seems completely dead... no neck glow that I can see. I'll play with the connectors more, maybe I'll get lucky. Usually I can "hear" a monitor that has power, and this one I hear nothing.

If you're hellbent on swapping it, meter the AC connector and make sure it's actually receiving power first. You don't want to swap the chassis only to find out the problem is in your cabinet wiring and you just accomplished nothing.

I would first address the voltage issue on the other side though. Power supplies are easy. Usually.
 
I dug into the slave machine this morning. The screen was reading "The Voltage of Supplied Power Is Too Low". My meter gave me readings that looked ok, but the fans on the supply weren't spinning. I swapped in a computer supply and I'm getting the same message on the screen.

The computer supply is holding at 4.75 on the 5v rail. Is this far enough off to create my problems?

The master side is playing blind. I haven't dug into it at all yet.
 
The computer supply is holding at 4.75 on the 5v rail. Is this far enough off to create my problems?

Way too low. We don't use computer power supplies for arcade stuff for a reason -- they're never adjustable, and the voltage output tends to be below 5v, which is fine for computers and has certain advantages there, but doesn't work at all for arcade hardware.

Get an adjustable switcher in there, bump it up to at least 5.1. If you still have the message, pick out an IC on the main board that's easy to access and has nice big legs, look up its pinout, and measure the voltage there.
 
I got the same message a while back. One monitor also acted dead and I freaked the hell out. Turns out I was running too many games on one circuit--tried running the VO from an outside circuit and never had the problem again. Try that before you try anything drastic.
 
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