crwdns2915892:0crwdne2915892:0
This guide will help you diagnose the Samsung Galaxy A70, Samsung Galaxy A50, and the Samsung Galaxy A20. This guide might also work for other Samsung models.
crwdns2936621:0crwdne2936621:0
-
-
This is the +5V line from the Charging port to the Motherboard.
-
-
-
Warm the device to soften the adhesive.
-
Use Sanction cup, Plastic tools and isopropyl alcohol.
-
Remove the silver Phillips screws from the device's frame.
-
-
-
-
Remove the plastic cap from the Fingerprint flex cable connector and disconnect the cable.
-
Remove the SIM Tray.
-
-
-
Use a plastic tool to separate the back cover from the frame. Start from the SIM tray hole.
-
-
-
Disconnect the main flex cable and connect the charger.
-
Use a multimeter to measure the voltages at the large end pins of the FPC connector of the charging board. (See the second image)
-
If the reading is okay (~5V) continue with the next step, if not - change the Charging board.
-
Attach the main flex cable and measure the large end pins of the Main flex FPC connector - pic.3.
-
If the reading is okay, continue with the next step, if not - change the Main flex cable.
-
-
-
Remove the adhesive rubber around the main flex connector on the logic board.
-
Use some flux and a soldering iron to re-solder the first pin of the motherboard FPC.
-
To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
crwdns2935221:0crwdne2935221:0
crwdns2935229:06crwdne2935229:0
crwdns2915084:0crwdne2915084:0
Master Techs crwdns2935289:0Master Techscrwdne2935289:0
Community
crwdns2931471:0327crwdne2931471:0
crwdns2935297:01.688crwdne2935297:0
crwdns2947410:01crwdne2947410:0
How to fix samsung A50s with termometer logo on screen when charging
