Mario Bros Wide body inverted

windsoreight

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Picked up a wide body last night. Told was playing blind. Had no monitor but a Sanyo was thrown in on the deal. I'm not running an inverter board and the picture is inverted. It's also glitching out but. Thought Mario was like the rest and didn't need the inverter board.
 
1) Sanyo monitors are natively inverted relative to other models like Wells-Gardner or Electrohome. that's why they work with Nintendo games, which are inverted, and require inverters if you're swapping them in for use with other games.

2) Mario Bros., Punch-Out, and the PlayChoice-10s as far as I can tell all came with Sanyo Z2AWs, not Sanyo EZs. while there are some negligible differences in capacitors vs. the EZ, the Z2AW comes with inverter boards.

3) the inverter boards on the Z2AWs with Nintendo games have 2 separate plugs: inverted and non-inverted. I don't remember specifically which is considered "inverted" in Nintendo terms, but these will have the monitor signal plug from the game board plugged into the one to not invert it.

4) you can do away with the inverter board completely by just plugging the monitor signal straight into the monitor instead. the mode in which it's used on Mario Bros. it's basically just a pass-through, and only introduces another cold solder point of failure later when you start dropping colors cause the solder's cracked on the headers.

any other information you hear about this other than what I just said is wrong.
 
That really didn't answer my question. No inverter board now and my colors are inverted with a white background. And I did know Nintendo monitors are inverted already
 
That really didn't answer my question. No inverter board now and my colors are inverted with a white background. And I did know Nintendo monitors are inverted already

Have you tried plugging in another monitor to confirm it's the PCB doing this and not the monitor? I'm not hearing much in the way of troubleshooting just yet?
 
I believe most of the inverted Nintendo games did have mods that would turn the PCs into producing non-inverted output. One of these is to replace the color proms with proms with new values. There may have been others.

Similarly, I believe there were mods for the EZ that would have it work with non-inverted signals as well.

It sounds like one of these mods was performed on your PCB or the EZ.

If you add in the inverter board, you can solve it that way w/o worrying which has been modded, or you can hunt down the mods and reverse them.
 
Well my question was does the Mario pcb require an inverter to work on an EZ20? I only have one working Sanyo. I'll try hooking it up to my Popeye tonight. But I was asking for a quick answer. And so far it's mixed weather Mario needs an inverter or not
 
Well it's the monitor. Even on popeye it's screwed up.

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Had an inversion kit installed, it was also recapped. It was a 10 minute fix.
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But the Mario board has issues. No acid damage. I reseated chips and still nothing. Just flips between these 2 screens. But I'll
Figure it out.

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