La fonction de mise au point de l'appareil photo du Samsung Galaxy A9s est défaillante

Defective Model: SAMSUNG A9s Released 2018, November Version: SM-A920F/DS (Global)   Defect Phenomenon Drop damage caused the auto focus function failure, cannot scan the QR code. Replace the rear camera module and tested twice, the issue is still unresolved.     Troubleshooting Since we have tested with another camera module, the issue stay unresolved. The […]

Réparation des puces défectueuses courantes de l'iPhone X

iPhone X was announced in 2017, September 12. Up to the present, around 4 years passed. Because of the aging, dropping, water damage, etc., there are more and more defective cell phones back in the after-sale market. Based on the real repair cases, let’s have a look at the iPhone X common faulty chips. 1. […]

Composants défectueux communs de l'iPhone 7

Based on repair experience, in this article, we would like to share the common fault components for iPhone 7. Audio CODEC IC Part Number: 338S00105 (U3101) Model: For iPhone 7/7 Plus This back side of the chip is the SIM connector, so might be the board design problem, which may easy to cause the Audio […]

Le signal Wifi de l'iPhone X est faible

Malfunction Phenomenon The Wifi signal is weak on this phone. Trouble Shooting After retesting the phone, the received signal strength is worse than the normal phones. So for this iPhone X Wifi signal is weak issue. First, let’s take apart the phone and check the inner parts and the cosmetics of the motherboard. After checking, we find […]

L'iPhone X ne démarre pas avec la réparation de la fuite de courant

Malfunction Phenomenon The phone can’t start up with leakage current. Trouble Shooting For the iPhone X No Start Up With Current Leakage issue. First, disassemble the phone and run the cosmetic inspection of the motherboard. There is no bear deformation and water damaged. Then connected with DC power supply to check whether the start-up current curve […]

Réparation du problème d'absence de charge de l'iPhone X

Malfunction Phenomenon The phone can only be charged by one side of the USB cable, but the opposite it does not work. Trouble Shooting For the iPhone X No Charging Issue Repair. First, take apart the phone and run the cosmetic inspection of the motherboard first. And the cosmetic is just fine, there is no deformation or water […]

Réparation du problème tactile de l'iPhone X

Malfunction Phenomenon The phone turns on normally, but the touchscreen unresponsive. Trouble Shooting For the iPhone X Touch Issue. First, we need to take apart the phone and run the cosmetic inspection of the motherboard first, to see if there are any components missing, corrosive, etc. After checking the cosmetics, if everything is OK. Then measure […]

Réparation du problème d'absence de Bluetooth sur l'iPhone X

Malfunction Phenomenon Bluetooth signal can’t be received by phone. Trouble Shooting For the iPhone X No Bluetooth Issue. As usual, the first step let’s take apart the phone and run the cosmetic inspection of the motherboard. The motherboard gets a little bit deformed. According to the experience of repair, the fault is might be related to the […]

La bande de base de l'iPhone X est anormale Réparation

Malfunction Phenomenon The signal is unstable, sometimes no signal. Trouble Shooting For the iPhone X Baseband Is Abnormal issue. First, let’s take apart the phone and run the cosmetic inspection of the motherboard. Firstly, we detach two layers from each other and found that some of the bonding pads on cylinders around the Baseband of the […]

Problème d'écran noir sur l'iPhone X

Malfunction Phenomenon The iPhone X black screen and no response at all. Trouble Shooting Take apart the phone and run the cosmetic inspection of the motherboard. There is some deformation on the motherboard.  Since the issue is related to the display. So, we can measure the diode value on the display connector J5700 first, the measured diode value […]

Impossible de reconnaître la carte SIM de l'iPhone X

Malfunction Phenomenon The SIM card cannot be recognized on the phone. Trouble Shooting First, we need to take apart the phone and run the cosmetic inspection of the motherboard. There is no water damage or deformation. Then measure the working voltage of the SIM card connector, the measured value pin of SIM_DETECT is 0.45V, which is abnormal […]

Problème d'absence de charge sur l'iPhone X

Malfunction Phenomenon The charger function is abnormal on this phone. Trouble Shooting The iPhone X no charging and appears charger symbol in the left top corner of the screen. Then we plugged into the power cable and stayed in shutdown status, the phone can be switched on. In the first step, we need to check the […]