Hi there, currently working on 820-02100-A logic board - No boot Chime, no Power on. - Very Minor Liquid Exposure - All cleaned with IPA , did a partial ultrasonic as well . Clean and dry.
MagSafe - Orange light cycles off then back on every 5-7 seconds
USB-C Ports - All 3 get to 19.9V/20V - .5A then Cycle ever 5 seconds.
All 4 CD3218 Chips have been checked at their LCD-CORE 3V5 and 1V5 lines at the local Capacitor, all are getting 1.5 and 3.5V But each have a different Voltage drop when the board cycles.. See below
(PP1V5_UPC_LDO_CORE) - AT EACH CD321...
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