Tecno T528 is among the qualitative feature phone that in hands of many our old and young ones
Power button line can break when heavy fall, but in most cases it damage for water because of DC current that supply through the power button
As we all know the outer circle of the power button is ground (GND) so it can be found everywhere and it's hardly to damage expect some erosion that can be cleaned .
The inner circle is received 3.xx Voltage so to ensure power button is function connect DC power supply or plug battery, set your miter on 20V
Put the red anode on inner circle and black on outer one if the current is not detect there then apply jumper to this racistor
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