coil section}ALL mobile boost coil section buck}coil section]full coil section 

R.S Sarath kumar
MST Technician
Laptop & Mobile Sarvice Training
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👉 boost / buck / LDO Circuit.
👉 GR/Diode value
👉 Cool test & Hot test.
👉 Primary & Secondary line.
👉 Booting sequence of mobile phones
👉 Charging section
👉 Thermal circuit fully explain
👉 Display light section
👉 Graphic section
👉 Audio section
👉 Network section
👉 REMOVE & install small components right way.
👉 Under masking jumper
👉 How to remove pasted ic (black & white paste)
👉 How to reball ( CPU , EMMC , PMU )
👉 Right way to remove plastic parts.
👉 Many more practical & repairing tips.