History: The computer will not power on. Not charging. The USB-C ports pull 5V but do not go up to 20v like they should.
After looking at the board it was determined U2800 was dead. The thunderbolt IC was replaced from donor and the system is functioning as intended. System boosts to 20V on all 4 ports and the battery charges. Customer picked up the machine and it has been working as intended until recently where it has begun randomly turning off completely. When the Apple Diagnostics is run he says there is a message about SMC.
Does this mean the SMC needs replaced or just something is wrong with that circuit? Are the thunderbolt chip and SMC from the donor board bound together in anyway that they both need to be switched over as a pair?
Any tips on where to look would be greatly appreciated.
After looking at the board it was determined U2800 was dead. The thunderbolt IC was replaced from donor and the system is functioning as intended. System boosts to 20V on all 4 ports and the battery charges. Customer picked up the machine and it has been working as intended until recently where it has begun randomly turning off completely. When the Apple Diagnostics is run he says there is a message about SMC.
Does this mean the SMC needs replaced or just something is wrong with that circuit? Are the thunderbolt chip and SMC from the donor board bound together in anyway that they both need to be switched over as a pair?
Any tips on where to look would be greatly appreciated.