"iPhone 7 not charging, already replaced both Tigris and Tristar chips"に関する回答I just had the same problem, for me the fix was to replace M2800, you can check the cap C2105 in my case the voltage was lower than 8v, also I check the cap in diode mode and the reading was off from a working circuit. The fix was to replace M2800. On another board I made a short reading C2105 and there was a smoke on M2800. So be very careful. Hope it helps someone.