Macbook Pro and Macbook Air Backlight IC Chip LP8550 Subtotal: $5.00
CD3217B12 USB-C Controller Chip For MacBook Pro A2159 A1989 A1990 – Charging IC U3100
A common symptom of a faulty CD3217B12 is 5V charge instead of 20v. In most cases you’ll have to replace both chips on the board and not just one.
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