NokiaX3-00 No Network solution

the solution for nokia X3 No network signal problem. This solution can be only used if the said device is already been restored or already do flashing the flash firmware but still the problem still exists.

The solution below shows the RF circuit on Nokia X3 PCB board layout.
You may need to check, rework or replace these components for further no network signal problem troubleshooting.



In troubleshooting network problem manually, check the whole RF circuit components first, ensure that it is cleaned free from oxidation build up due to water or wet damaged.
You may start to work with the RF Power amplifier (PA).
Try to replace it with new replacement one but before that check the RF supply voltage first which came from the battery voltage 3.7 volts.
If the power amplifier has been already replaced but nothing happens, you may then try to rework the RF chip, or replace it if necessary.
There are also some possibilities that the signal lost is caused by a faulty or damaged oscillator and RF filters.