Chosen Solution

Hi Reece I have 820-3536-A board and I have 0v on my PP5v_s0 . Can you tell me where do I check first please?

@chintan84 check G3H and S5 rails, if all present work up to S4, S3 then S0. If just PP5V_S0 is missing and all other S0 rails are present, look into the circuit which generates PP5V_S0 to make sure all inputs are present and nothing is off. Beyond this, it is up to you; I can’t help you further without seeing the issue myself :)