Schematics of logic board MP early 2008

Hi guys is there any chance someone could point me in the right direction, of where to find schematics of the 2008 MP, I'd like to take some multimeter measurements.

Thanks in advance as usual.

Yup, I only would like to check where is the continum, since I'm almost positive my logic board is dead sadly. At least I'd like to determine wich capacitor or fuse went bad. I'm betting on the power supply chain. Since the diag led is indicating it receives trickle power but the power is not flashing, not the white one in the power button, the ones with the diagnostic chain of LEDs. I believe is the 8th led.