Macbook A2289 820-01897does not charge.

[PITERPENY]

The MacBook works completely on battery power but does not charge! When the battery is connected, the lower USB port stops working (without the battery, all 4 ports work with a consumption of 5 V/0250 A (not stable)).

[mon2]

Test the resistance (with no power) of the battery charge leg (current sense) of the charger IC. Does the measurement match the schematic resistance values?

[PITERPENY]

CD3217

[PITERPENY]

By the way, I removed a pair of CD3217 from a MacBook Air A2179! They are interchangeable!

[phantomEVO]

what do you mean?

[PITERPENY]

what do you mean?