Question 5
A mobile phone indicates charging when connected to a power charger but refuses to power ON. State three possible:
a) causes of this fault;
b) solutions to the causes identified in 5(a).
Most of the candidates that answered this question could not score any mark. This is because they could not state correct causes and solutions as required.
Observation
The expected answers are:
(a) Causes of Phone not Powering ON
- bad power switch
- broken line bus
- bad components e.g. resistor, capacitor, coil etc
-bad flex
b. Solutions to causes identified in 5(a)
- bad power switch: replace with the exact type
- broken line bus: run a jumper
- bad component: replace component
- bad flex: replace bad flex