Samsung Logic Board Repair Guides & Tips ( Galaxy S8 Demo )

Samsung Logic Board Repair Guides & Tips ( Galaxy S8 Demo )

Samsung mobile phone repair process, you can pass the command test first Determine the approximate range of failure: Software or hardware failure Power on, enter dial interface Enter relevant instructions to test different modules * # 0 * #: test camera, sensor, touch, etc * # 7353 #: test light perception, Bluetooth, distance sensing, etc

* # 0283 #: test microphone, headphone jack, etc * # 1234 #: Determine the system version number and firmware version number Flashing can usually solve most system failures or software problems Therefore, brushing machine is an essential skill for maintenance personnel The following shows the flashing process of S8 Shutdown Press and hold the volume down button + power button + Bixby button at the same time Enter flash mode Open the flash software Odin Then connect your phone to your computer The phone is automatically recognized by the software Call up the corresponding flash package Click Start to flash If an error occurs during the flashing process, Then you can operate according to the error prompt Once it is determined that the fault is hardware related Next need to disassemble the machine for further diagnosis Samsung phone disassembly methods are generally divided into two types A series need to separate the screen and the middle frame first A series need to separate the screen and the middle frame first S series and Note series, You need to separate the back shell from the middle frame Next we use S8 as the column Demonstrate the disassembly skills of the S series Note: The heating pad is an indispensable tool for disassembling First heat the back shell with a heating pad After the heating is completed, hold the rear shell with a suction cup Lift up the suction cup slightly At the same time, insert the blade into the gap At the same time, insert the blade into the gap Then insert the plastic rocker into the gap Slowly slide along the gap around the phone, Divide the waterproof glue between the rear case and the bracket You can also drip an appropriate amount of alcohol into the gap during the sliding process So as to facilitate the operation Note: Do not go too far To avoid damage to the fingerprint cable and wireless charging ring To avoid damaging the fingerprint cable, The back shell can be slowly lifted from the side close to the fingerprint holder The back shell can be slowly lifted from the side close to the fingerprint holder Then use a spudger to disconnect the fingerprint cable Remove the rear case As you can see, Samsung S series and Note series Waterproof glue is located around the edges of the rear shell And more glue on the top and bottom Make sure to heat evenly when disassembling And control the temperature and time Continue to remove the wireless charger assembly and speaker It can be seen that the motherboard is connected to the attached USB small board through the FPC cable

In fact, most Android phones use this structural design Let's take a look at the characteristics of Samsung motherboards Compared to the Apple motherboard, Samsung motherboard components are relatively small in number and scattered (High component integration) Most Samsung motherboard ICs have sealants Samsung motherboards are thinner and cool faster This makes it difficult to repair the chip Battery replacement It is also a place to pay attention to Samsung mobile phone repair Apple phone battery with easy-to-remove adhesive design Apple phone battery with easy-to-remove adhesive design Samsung's battery adhesive design is different You need to heat it before proceeding During heating, drip alcohol into the sealant around the battery Insert the rocker into the bottom seam Just slightly pry up the battery

Source: Youtube

Md. Elias
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