For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
The R1981 region had oxidation, I replaced the components, but no result.
AUD_IP_PERIPHERAL_DET 21mV without the headphone
AUD_IP_PERIPHERAL_DET 3.3V with the headphone connected.