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Shenzhou Feitian U147 notebook is not turned on for repair
Machine model: Shenzhou Feitian U147 notebook
Fault symptom: the notebook does not turn on.
Maintenance process:
Shenzhou Feitian U147 notebook, standby at 0.010, press the switching current to 0.099, then fall back to 0.010 after more than ten seconds, and then press the switching current to keep it unchanged. Plug in the charger again, and the situation is the same.
There is always current in standby, and there is memory power supply when it is 0.099, and nothing else. Test V_DC_IN is normal, plug-in power +V_DC is normal, only battery is used, +V_DC has no voltage, remove Q63, and short-circuit pins 123 and 5678.
The test machine is turned on, the test function is normal, and the troubleshooting and maintenance are over.
Shenzhou Feitian U147 Notebook Maintenance without Booting Figure 1
Shenzhou Feitian U147 Notebook Maintenance without Booting Figure 2
