Blu C5 - Contact Management; Managing Phone Contacts

Doesn’t switch on
Start
YES
OVER
No
No
Check
the power
sequence
Upgrade to latest
Software, check if
the issue have
been solved
Test if power-on
current is
abnormal
YES
If the current is
higher than
normal, check
the hotter
components,
then replace it
Yes
Check if
power key
is ok
No
Replace
power key
Is the PS voltage
OK
NO
Replace PMIC
Yes
Is crystal
oscillator‘s
Signal (32.768KHz)
OK
NO
Replace
32.768K
Is the
26M signal OK
NO
Replace 26M
Check if CPU
soldering is ok
NO
Re-solder or
Replace CPU
Check if
Memory IC
soldering is ok
Yes
Yes
No
Re-solder or
Replace
Memory IC
Replace Main PWB
Yes
Yes