Hello all,
Am attempting to repair this board which has no green light. It has all the G3H "always present" voltage rails except that PPBUS_G3H is 8.1V. It is not going past this state and S4 and other voltages from there on out are missing. I can't see any shorts atm nor do i see an attempt at turning on and then shutting down because of a short. It just seems dead. SMC_RESET_L is 3.3v and the one wire circuit seems to be okay. I did have to cross ref the info for the LIO board where the one wire circuit is as I can't find the LIO schematic for this board.
Your help as always, greatly appreciated.
Am attempting to repair this board which has no green light. It has all the G3H "always present" voltage rails except that PPBUS_G3H is 8.1V. It is not going past this state and S4 and other voltages from there on out are missing. I can't see any shorts atm nor do i see an attempt at turning on and then shutting down because of a short. It just seems dead. SMC_RESET_L is 3.3v and the one wire circuit seems to be okay. I did have to cross ref the info for the LIO board where the one wire circuit is as I can't find the LIO schematic for this board.
Your help as always, greatly appreciated.