Picked up another xbox that was sold for parts and untested. Noticed a switch hanging out of the bottom so took a chance.
Xbox started up fine and booted up custom bios.
Had to remove the motherboard to remove clock capacitor that has visibly failed. Does not appear to be any damage to the traces (version 1.4 or 1.5).
Will reinstall the chip after cleaning up the xbox to see what I have.
Already downloaded the install instruction that were on another thread.