Yesterday, we gained an iPhone 6, which has screen failure, the iPhone screen is blurred, we strive some softwware answers, however now not operating, we additionally take a look at to repair it through changing iPhone scree, however nonetheless failed. So, we suspected that it is the iPhone motherboard downside.
Use screwdriver to take away the srews subsequent to the iPhone lightning port, put iPhone 6 at the CPB screen separator for some time, after which open the iPhone 6. Remove the iPhone show meeting and iPhone battery, after which take out the iPhone motherboard.
Observe the iPhone motherboard, we discovered the higher phase is severely deformed. Use virtual multimeter to measure the grounding resistance worth of the iPhone show socket J2019, the resistance worth all is commonplace.
Put iPhone motherboard beneath the Trinocular Integrated Microscope, take away the iPhone show IC U1501.Measuring the grounding resistance worth of the iPhone show IC J219, we discovered the A4 pin is shorted, A4 pin contact 5.7V energy provide, it is hooked up to iPhone black contact IC and a few filter out capacitors.
Because the higher a part of iPhone motherboard is deformed severely, and the iPhone black contact IC is simple to injury, so take away the iPhone black contact IC. However, it’s nonetheless short-circuited after take away the iPhone black contact IC, turns out it isn’t the issue of the iPhone black contact IC.
Next we’d like to use QUICK 861DW sizzling air remodel station to take away the filter out capacitors that attach to it, after take away the filter out capacitor C1577, the resistance worth is again to commonplace. Re-install the iPhone black contact ICand iPhone show IC.
Now, set up the iPhone, price the iPhone 6 with iPhone lightning cable, after some time, energy at the iPhone, now we will see Apple emblem seems on iPhone screen, the iPhone screen presentations in most cases. Test different purposes on iPhone, all works completely.