Uh, no. I've never had a Pro. Depends on if the power switch is on the board or not. Usually a membrane switch.
I don't recommend this but, find the switch. If it's directly on the board, look on the opposite side of the board from the switch.
Should be two pads. If it's not directly on the board, follow the wires to the board. Where they connect will be pads.
Again, not recommended. If you don't know what you're doing you can get hurt. Like in ZAP hurt.