I don't know anything about this system but I found it in an abandoned reno house, power and video?

[/turboG16]

It doesn't have the power or video cables. I can probably cut a barrel connector off a cable and use my bench power supply to power it, but I am unsure what the video cable is supposed to be?
https://i.imgur.com/Td3vHb0.jpg

submitted by /u/plasticsparks
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