Question 10
A mobile phone, order than blackberry, powers ON as soon as the main battery is inserted. State two:
(a) causes of this problem
(b) ways to rectify the problem
Candidates’ that attempted this question performed fairly.
Observation
The expected answers are:
(a) Causes of stated phone problem
Any correct 4
- Short circuit on the PCB
- Power switch may be bad
- Short circuit in its USB (caused by dirt or water)
- Phone falling into water/liquids
- Frequent falling of phone
- Short circuit in its charging port
(b)Solutions to the problems identified in 10(a)
-washing PCB/USB port with appropriate fluid and dry it
- replace power switch
- clean the dirt / water and flash when necessary
- Avoid frequent falling of the phone
- Avoid phone falling into water/liquid