Like the T2 and M1 machines, the M2 Air utilizes the controllers for USB-C port management. These chips control charging and data negotiation. Symptoms include:
It is vital to understand the limitations of board repair on the : e89382 boardview
While less common than on older models, backlight circuitry still exists. The boardview allows you to trace the PPVOUT_S0_LCDBKLT rail from the backlight driver to the connector, helping you diagnose if the issue is a blown fuse, a shorted diode, or a logic board issue versus a screen issue. Like the T2 and M1 machines, the M2
[Components] R1, 10k, 0402, (10.5, 20.3), Top C5, 10uF, 0805, (15.2, 22.1), Top U1, MAX3232, SOIC-16, (30.0, 40.0), Top J2, CONN_USB, USB-A, (5.0, 60.0), Top The boardview allows you to trace the PPVOUT_S0_LCDBKLT
To give you an idea, a manual entry in a simple .asc Boardview format might look like: