Coleco adam psu attempt

[Skyler]

So im attempting to make a psu for my adam. I bought one that somoneone on YouTube recommended and followed a pinnout I found. When I tried it I got a black screen with some static. Checked the voltages at the supply while plugged in to the adam and they seem normal. Checked the voltage at the end of the cable and they were the same. Checked the voltages on the other side of the connector inside of the adam and they were low (like 10v, 1.7v, -6v) not sure what's up if the connector is bad, checked a few of the pins on it and they didn't have high resistance. I don't know if this is normal or not or even if the computer works, so any help is appreciated.