Phetishboy
Well-known member
Got a Punchout in a trade recently that I was told had 'graphic glitches'. I plugged it in, turned it on and both screens were white, no game play, video or audio. Reseated all cables, tried again, still white. Bought another tested/ working PCB, plugged it in, still white. Checked the video cables, the top one was disconnected, plugged it in, still white. Can I try a DK style power supply in here to see if the PSU is bad? What else should I check? What is the big gray cylinder on the bottom of the cab? Transformer? This blows. I set my meter to the lowest setting on DC, checked pin one on a few random chips and they were all pulsing between 2.3 and 2.4 V. Does that mean anything to you folks? Where are the 5V tp's on these boards?

