Samsung Digimax S500 - How to Check each Parts

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Ⅶ.TROUBLESHOOTING
4. How to check each parts
Is the voltage of Main
PCB 3V?
Does the over current
take place?
Does the over current
take place?
Changing Fuse
The camera doesn't
turn on and the current
is between hundreds
or thousands of mA.
Is the voltage of
TP14 3.3V?
The voltage of
TP11 is about 3.2V
The voltage of
TP4 is about 5.0V
The voltage of
TP18 is about 2.5V
The same problem remains
after removing the L±P1
The same problem remains
after removing the U±P1
The voltage of
TP19 is about 3.4V
a
b
Change the Main Board
Change the
U±P1
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NONO
NO