Thanks for the replies everyone.
@demik Thanks for the tip I fear I may have bitten off more than I can chew with this one, I bought the machine feeling nostalgic.. oh well.. oh well, I'll take it as a learning journey. Those schematics in the pdf are detailed, thanks! They will come in handy, but as I'm a noob it may take a while to navigate them.
I noticed C385 has been ripped right off the motherboard, so I'll need to replace it as a start.
The case came in rightful crap state.. I'm not daring enough to use the power supply that came with it. Time to fin