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IPhone 5 no backlight troubleshooting tutorial

by:YoukingTech     2021-08-26
Posted on 04.30, an iPhone 5 mobile phone. When I got it, the machine had just been flooded, and I could answer the phone, and I could vaguely see the image. Method/step failure analysis: The problem of the iPhone without backlight is a common problem. As the iPhone 5 has a backlight boost of up to 12V, it will quickly corrode when exposed to water. To solve this problem, you need to disassemble the device to check whether the backlight circuit is there. Corrosion problem. 1 Troubleshooting: After opening the phone screen and screen cover, remove the display and observe that there is no corrosion problem on the display interface. Checking down, it is found that the inductor FL24 has been corroded to dust. After handling the FL24 pad, short it and install the screen. The lighting is normal, the fault is eliminated, and the component location diagram is shown in Figure 1. 2
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