Here's how to fix a damage Samsung E1200 with no network signal (coverage). If the problem is not caused by the device flash firmware, this solution can be used. Before proceeding with hardware troubleshooting, try to restore or update the device flash firmware.
This problem occurs when the device is wet or accidentally dropped.
Before proceeding with any software or hardware repair on a water-damaged Samsung E1200, make sure to clean the PCB board first. In the case of accidentally dropped units, such as those with a dropping signal indicator on the display, you should first restore and update the flash firmware before attempting hardware repair.
If the phone cannot be fixed by restoring the firmware, you can perform a hardware check and troubleshooting.
The solution below shows which specific components may need to be checked, traced, and/or replaced if found to be damaged.
See the image
The RF circuit is made up of chips, also known as integrated circuits (IC). When troubleshooting an RF signal problem, you may need to use a frequency counter to make the repair easier, but you can also do it manually.
First, inspect all of the supply voltages that feed each of the RF circuit chips, such as the RF power amplifier and RF IC. Other than the battery supply voltage, an RF power supply controller feeds the secondary supply.
Please leave a comment if you have any further questions.
Note: Please keep in mind that every repair solution posted here has been tested by at least one member of our team. Use the information provided at your own risk. We are not liable if your device is damaged during the repair process.
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