Blu ARIA II - No or Weak Signal Troubleshooting

31
N0/weak signal trouble shooing
No or weak signal
Inspect the antenna and
antenna connector to see
if there’s any distortion
Replace the defective
components.
Put a false antenna at RF PA
IC to see if there’s any signal
Replace RF PA IC.
Make a false antenna at
J501, check if there’s any
signal
Saw filter is damaged,
replace it.
Replace U301
oscillator to check if
the problem is solved.
Re-solder or replace
CPU MT6260
END
YES
NO
YES
NO
YES
NO
OK