Macbook Air A1466 820-0015-A Unable to Boot (Battery Charging Sign Only)Solved


New member
Hello jhon here again, I have macbook air A1466 unable to boot keep on showing battery charging in lowbat mode even no battery connected.
History It was fully dead due to a shorted capacitor I just removed and replace the capacitor and it power on with the charger alone, So I expected all is fine then I assimble the unit but it will not boot if the battery and the usb flex is connected. Anyone had incounter this kind of issue please help me to fix it I am newbie on macbook repair.



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Staff member
Try to see what happens disconnecting LIO flex; keep only power connected from LIO board.
Use original Magsafe 2 charger, not 1->2 adapter.
Post exact PPBUS_G3H voltage w/ and w/o battery connected.

Try to start in SMC bypass mode too...


New member
Thanks sir the macbook is successfully fixed now. It was C7373 Is the only one cause of the issue I just replace a new one from other motherboard and it successfully fixed.

Thanks a lot sir


Hola, tengo el mismo problema, sin la batería la computadora enciende y funciona a la perfección; cuando conecto la batería solo me muestra el ICONO como si estuviera descargada. Que puedo revisar en primer lugar?