Well, if you're using a true Arcade Monitor, using a 31khz card can kill it, unless it's a 31khz one, but normally they're 15khz, so... if you find out the model number and then find the documentation, I'm sure it will say what the frequency is, or what res (15 - Low Res, 24 - Medium Res, 31 - High Res)
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On a quest for Digital 573 and Dancing Stage EuroMix 2