Arcade Collecting > Restorations & repair

Today, I won this... White Screen problem

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slapaham:
Mmm... just found a bit of info that might be of some interest... there is a small chance this cab is a Unigame cab and therefore ISN'T Jamma - while Unigame looks similar to Jamma it isn't the same... interesting!

Kevin Mullins:
I didn't look into whether UNIGAME ever was some sort of proprietary run of machines.
You may definitely want to investigate that a bit before plugging any JAMMA boards into it.
At least make certain the 5v and 12v are matched otherwise it'll toast a board quickly.

Could possibly be something like the Sega setup which matches that Shinobi. (System 16)

slapaham:
I shall take a cautious look... thanks for the advice! :cheers:

channelmaniac:
White screen... Do you get the same white screen with no game board installed?

Do you see any video under the white? If so, turn the screen control on the flyback down.

What kind of monitor is it? If it's a Wells Gardner K4600 with those silly little upright daughter cards then you'll find a shorted zener diode and transistor in the blanking circuit. I had that problem on an old Atari Kangaroo.

RJ

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