Today we will certainly share a fixing situation of an apple iphone 12 that is incapable to transform on Press the power switch and the phone won’t switch on Connect the phone to power as well as the phone still won’t switch on Disconnect the display Power up the motherboard Please be kept in mind that the moment for powering up shouldn’t be as well long It can be seen that the current value is big The motherboard has a huge present which shows the motherboard is short-circuited Next off, we require to eliminate the motherboard as well as situate the defective part for repair service Step the diode value of PP_BATT_VCC line with a multimeter The diode worth is 0 It can be verified that PP_BATT_VCC line is short-circuited PP_BATT_VCC line and also PP_VDD_MAIN line of iPhone 12 are attached in collection by an inductor So the short-circuited PP_BATT_VCC line might also cause the PP_VDD_MAIN line to brief circuit The old remedy to fix the large current problem is through rosin discovering Via the melting of rosin, we can validate the damaged part Though the service is low-cost and also efficient, it has some drawbacks The motherboard has actually to be covered with rosin while the rosin is difficult to cleanse up later In addition, we have to get rid of protecting covers on the motherboard for a comprehensive inspection There is no question that operation difficulty will be significantly enhanced Today we will present an advanced and also effective way to seek short circuit on the motherboard with the help of a Thermal Imager Cam The thermal imager situates the part of which temperature is higher than regular value through infrared radiation The thermal imager can discover motherboard electric leak within secs The damaged parts will certainly be detected in no time when you place the motherboard under the video camera, tremendously improving repair work effectiveness While inspecting general motherboard working problems, the thermal imager can determine faulty parts with high precision Moreover, the thermal imager is an expert in spotting little electric leakage, short circuit and also various other troubles with easy as well as safe operation, substantially lowering the error rate First of all, we put the motherboard on the functioning platform Connect the black probe of the straight power supply to the ground and also link the red probe to PP_BATT_VCC line The temperature on the leading left corner has increased up The malfunctioning part can be validated on the leading left corner Open the bitmap We can see that PP_BATT_VCC line is not on the leading left edge Because PP_BATT_VCC line and also PP_VDD_MAIN line are linked in series by an inductor, we can judge that PP_VDD_MAIN line is short-circuited Through inductors of PP_BATT_VCC line, click one more side of the inductors The opposite side is linked to PP_VDD_MAIN line We can once more establish the variety of faulty component It can be seen on the bitmap that the PP_VDD_MAIN line is on the logic board Following, we divide the motherboard Put the motherboard on the 170 ° C Heating System to warmth Remove the motherboard After the reasoning board has actually cooled down, power up the reasoning board Link the black probe to the ground and connect the red probe to PP_VDD_MAIN line Through the thermal picture, we can now confirm the defective component The capacitor is flawed with charring Eliminate the capacitor Clean the bonding pad with PCB Cleaner Determine the diode values of PP_VDD_MAIN line and PP_BATT_VCC line The diode values go back to regular The short circuit fault has actually been gotten rid of Then we recombine the motherboard Assemble the phone to examine The phone switches on generally Wi-fi as well as baseband operate well IMEI number can be seen The mistake has been eliminated You can acquire the Thermal Imager Camera on REWA store Please do not be reluctant to call our account managers or customer support team for more details Thank you for viewing
Fix iPhone 12 Won’t Turn On By Infrared Thermal Imaging Camera
