Update: FIXED! :D
After re-soldering some of the through hole solder dots (completely cleaning up, sucking out with wick, fresh solder in) And removing the long patch cable I previously installed from the ROM, the machine came to life :) I've put my epoxy over my patch trace wires to keep them safe, since all my traces were on the back it has turned out to be a very neat job.
I will be selling this machine once I put it back together, I've also upgraded the rom to 3.1.4 (since originally I thought the rom could have been faulty)
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