ACER Travelmate B116 NoteBook can't power on. When you plug in the charger, the charger light will off. It means that there is a short to ground on charging line. See video below.
It's obvious that there is a shorted somewhere in charging section. I checked the circuit. I found that the charging path has a protective component against over voltage / current. that is the diode. I'm sure that the diode is defective.
I lift up its one foot and check using tester. Confirmed! The diode is shorted. After removing, the laptop can be switch on now and the charging light on charger no longer shut-off.
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