Here's the solution for Nokia 1680c and 1681 classic display problem such as blank screen, blue screen and white screen display problem.
To fix display problem like blue and white screen, you may first restore and flash update the device flash firmware, display problem such as this is sometimes caused by a firmware failure. If the firmware calibration doesn't fix the phone, you may then consider that the problem lies on hardware failure.
For display problem hardware troubleshooting, you may first try to replace the LCD screen module. then refer to the solution below if the newly installed LCD shows the same problem.
You may first start checking the display pin connector for possible damaged, clean it also if an oxidation build up found. Check the VIO and VFLASH LCD supply voltage pins. Trace each of the corresponding display signal line paths. There were four Resistors connected on it, this resistors has a rated value of 100 ohms each, check and replace it also, if found damaged.
If the above procedure does not solved the problem, you may then consider that the problem may lies on the CPU chip. Reworking or Replacing it will only fix the display problem on Nokia 1680c or 1681c.
To fix display problem like blue and white screen, you may first restore and flash update the device flash firmware, display problem such as this is sometimes caused by a firmware failure. If the firmware calibration doesn't fix the phone, you may then consider that the problem lies on hardware failure.
For display problem hardware troubleshooting, you may first try to replace the LCD screen module. then refer to the solution below if the newly installed LCD shows the same problem.
Nokia1680c and 1681c Display Connection Line Paths
You may first start checking the display pin connector for possible damaged, clean it also if an oxidation build up found. Check the VIO and VFLASH LCD supply voltage pins. Trace each of the corresponding display signal line paths. There were four Resistors connected on it, this resistors has a rated value of 100 ohms each, check and replace it also, if found damaged.
If the above procedure does not solved the problem, you may then consider that the problem may lies on the CPU chip. Reworking or Replacing it will only fix the display problem on Nokia 1680c or 1681c.
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