System not booting, no boot chime, sleep light solid on
As the subject says. I can also hear the boot drive make sounds when power button is pressed. Previous threads seemed to indicate that this might be a problem with left I/O board, as previously (when system was still working) I also noticed that USB devices would not power or charge off of the left hand USB connector but would off the right. A replacement (ifixit) I/O board did not change the symptoms. Is it possible that the replacement board is also defective, or is it more likely the logic board is fried?
Is dit een goede vraag?