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Glory 30s After Fall hard, WiFi cannot be opened for repair
Machine model: glory 30s
Fault phenomenon: WiFi cannot be turned on after the Fall hard.
Maintenance process:
1. Exclude Inveracious Soldering,Reballing chip, dry again.
2. There is still no WiFi. When testing Capacitor around WiFi chip, there is no Short circuit. When the machine is turned on, VCC can be detected by testing Capacitor around WiFi chip. The WiFi VCC is self-produced and sold. It can measure VCC, which indicates that VCC and chip rate are good.
Glory 30s After Fall hard, WiFi cannot be opened for repair Figure 1.
3. Turn on Xinzhizao Soft, find i3c1 signal, turn on the machine and measure that VCC is normal.
Glory 30s After Fall hard, WiFi cannot be opened for repair Figure 2.
4. Carefully observe the motherboard, found that the motherboard has a broken trace, and found that there is no CLK near the WiFi chip.Open the Xinzhizao Soft drawing, find the CLK that ran away from home, remove the CLK and measure the on-off. It turns out that CLK is disconnected and Jump wire is repaired.
Glory 30s After Fall hard, WiFi cannot be opened for repair Figure 3.
Maintenance summary: when CLK is designed to the outside, the disconnection should be considered first.
