upgraded a few 2019 iMacs the SMC error persists.
I've upgraded a few 2019 iMacs, a few of which have thrown SMC errors after the upgrade. Even after reinstalling the original CPU/RAM/drives in the machine, the SMC error persists. There has been no physical damage done to the logic board, the CPU socket has no bent or damaged pins. I'm not sure what I could possibly be doing to cause this issue. Any thoughts?
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Can you give us the error codes.
See if your system is able to run the onboard diagnostics. Restart your system and press the D key to enter into the onboard diagnostics what errors dis you get?
Reference: Mac startup key combinations
Some more information would definitely be helpful Where are you finding the errors you mention, which errors are you getting?
из Alisha C