Samsung Galaxy A40 A70 Charging Problem, FPC, Diagnose, Explanation

Samsung A40 how to diagnose not charging problem. You can diagnose in the same way Samsung A70 and Samsung A20. First you have to check the Charging dock board, next is the Main flex cable and at the end is the FPC connector on the mother board. To fix it you need a good soldering iron an a little experience. Samsung A40 charging problem is from: 1. Charging dock (Type-C charging port or FPC connector) - 40% chance 2. Main flex cable - 15% chance 3. Motherboard FPC connector - 40% chance Video guide: 00:00 Samsung Galaxy A40 Charging Problem 00:30 +5V line from the charging port (charging dock) through the Main flex cable to the FPC connector on the Motherboard. 01:05 Back cover/ Battery cover removal - Warm up the device to soften the adhesive and use only plastic tools, suction cup and a little isopropyl alcohol. 01:31 Middle frame removal - remove all silver Phillips screws, eject the SIM tray and with a plastic tool start separation near to the SIM tray hole. 01:40 Disconnect the Fingerprint sensor (first remove the cap covers the FP connector) 01:45 Remove the SIM Tray 01:48 Remove the meddle frame. Use only plastic tools. 01:57 Disconnect the battery 02:02 Remove the main flex cable. 02:05 Connect the charger. Check the charging line on the daughter board FPC connector. 02:17 If the readings are okay +5V connect the main flex to continue with the diagnose. 02:22 Check the charging line at the other end of the cable. 02:32 If you have +5V take attention on the FPC connector of the mother board. 02:48 Re-solder the first pin on the FPC connector. iFixit manual: https://www.ifixit.com/Guide/Diagnose... Samsung A40 Bypass FRP:    • Samsung Galaxy A40 - FRP / Bypass Google A...   Samsung A40 Charging port replacement:    • Samsung Galaxy A40 - Charging Board Replac...   #galaxya40 #nocharge #samsungrepair