Vivo Y83 mobile phone lock screen sleep dead repair

Vivo Y83 mobile phone lock screen sleep dead, redo Nand fault repair.

AlIVE Y83mobile phoneTroubleshooting of lock screen sleeping

Machine model: vivo Y83
Fault: the mobile phone can be turned on, but it will turn off automatically as long as the screen is locked for less than 10 seconds.Cell phone lock screen.

Vivo Y83 mobile phone lock screen sleep repair Figure 1.

Fault analysis: this kind of mobile phone lock screen sleep failure is mostly CPU Inductor Inveracious Soldering or kit Inveracious Soldering.
Maintenance process: first break off the main power supply on the right several Inductor are very strong, and then made a kit.

Vivo Y83 mobile phone lock screen sleep repair Figure 2.

Vivo Y83 mobile phone lock screen sleep repair Figure 3.

Redo kit failure remains.

Vivo Y83 mobile phone lock screen sleep repair Figure 4.

Go back to the head and look at Inductor again. Only the three Inductor on the right are connected to the CPU to replace them.

Vivo Y83 mobile phone lock screen sleep repair Figure 5.

Vivo Y83 mobile phone lock screen sleep repair Figure 6.

After replacing Inductor no booting,Connect the power supply short-circuit current is more than 200 ma. If you remove the power supply, you will not be short-circuit current. If you change the power supply,Connect the power supply will not be short-circuit current, and the small Keeps Shaking will be started.

Vivo Y83 mobile phone lock screen sleep repair Figure 7.

Vivo Y83 mobile phone lock screen sleep repair figure 8.

The rosin smoke method on the top of the power supply found that the lower right corner first melted. When measuring the lower right corner near Capacitor,Short circuit was found.

Vivo Y83 mobile phone lock screen sleep repair Figure 9.

Short circuit Capacitor only has the kit moved, so observe the kit first. As a result,Nand is crooked, and Nand is disassembled and Short circuit is not. Do it again.

Vivo Y83 mobile phone lock screen sleep repair Figure 10.

Maintenance results: after starting the machine, the lock screen will play music and will never sleep dead again. We must learn a lesson from the detour of maintenance.