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iPhone 6 Plus screen failure troubleshooting
Machine model: iPhone 6 Plus
Malfunction: The screen of the mobile phone is out of order and there is no response.
iPhone 6 Plus screen failure troubleshooting figure 1.
[Maintenance process]: For the fallen machine, the LCM_TO_AP_HIFA_BSYNC synchronization signal of M1 pin bit of BCM5976C1 chip U2402 is easy to be disconnected by Inveracious Soldering or PAD.
iPhone 6 Plus screen failure troubleshooting figure 2.
Dismantle the main board,SMD REWORK STATION took down U2402, and found that M1 pin bit was blackened and desoldering.
iPhone 6 Plus screen failure troubleshooting figure 3.
Scraper,Jump wire fixed,Solder Mask UV curable.
iPhone 6 Plus screen failure troubleshooting figure 4.
Replace the U2402 BCM5976C1 chip.
iPhone 6 Plus screen failure troubleshooting figure 5.
Installation test, touch back to normal, and maintenance is over. This fault is the failure of mobile phone screen caused by the disconnection of M1 pin bit of BCM5976C1 chip.
iPhone 6 Plus screen failure troubleshooting figure 6.
