Showing posts with label signal. Show all posts
Showing posts with label signal. Show all posts
Monday, November 17, 2014
Nokia 7230 No Network Signal Problem Solution
Heres a brief solution for Nokia 7230 No network signal problem. This solution shows the RF circuit on nokia 7230 that holds the radio signal during data transmission.
Please note before you may use this solution, first ensure that the device firmware is totally calibrated, successfully flashed or restored and upgraded or downgraded. This solution below covers only for hardware failure that may not or cant be fix by software or firmware. The Nokia 7230 RF circuit components mounting is similar to Nokia X6. This solution below is from Nokia X6 board.
Just follow the instructions indicated on the solution above of which and where to start in troubleshooting proceedings. In most common cases the RF Power Amplifier breakdown may most often causes the problem.
Please note before you may use this solution, first ensure that the device firmware is totally calibrated, successfully flashed or restored and upgraded or downgraded. This solution below covers only for hardware failure that may not or cant be fix by software or firmware. The Nokia 7230 RF circuit components mounting is similar to Nokia X6. This solution below is from Nokia X6 board.
Nokia 7230 No Network Signal Solution
Just follow the instructions indicated on the solution above of which and where to start in troubleshooting proceedings. In most common cases the RF Power Amplifier breakdown may most often causes the problem.
Thursday, November 13, 2014
Nokia 2710 Navigation Edition No Network Signal Solution
Heres the solution for Nokia 2710ne that have No network signal problem. This problem happens when the device suffered wet damaged or accidentally dropped.
For a water damaged Nokia 2710, you must ensure to clean the PCB board first before proceeding any software and hardware repair. And for accidentally dropped units like it shows a dropping signal indicator on the display, you may restore and or update the flash firmware first before you attempting hardware repair.
If the phone does not being fix through firmware restoration, you may then proceed to do a hardware check up and troubleshooting.
The solution below shows which particular components that may need to check, trace and or then replace if found damaged.
Hints for repair:
Before you may proceed you must see to it that the antenna terminal contact expander were not damaged nor misaligned and it has a proper connection to the antenna module. A poor antenna connection also results to poor, dropping, and or no network signal receptions.
If the antenna connection is okay, you may then proceed to work on the RF Power Amplifier.
Check the RF PA chips supply voltage, this voltage is feed from the phones battery 3.7 volts.
If there is no voltage reading, trace its line paths through to the battery connector positive terminal. Just manage to apply jumper wire on it if the line is cut, fot it is the only option.
If the supply voltage is okay you may then remove the RF amplifier chip. Check all the solder bumps if there is already lifted or damaged. Install a new RF power amplifier. In most cases a damage RF Power Amplifier result to No Network Signal like on nokia 2710 navigation edition.
ReadHere..
For a water damaged Nokia 2710, you must ensure to clean the PCB board first before proceeding any software and hardware repair. And for accidentally dropped units like it shows a dropping signal indicator on the display, you may restore and or update the flash firmware first before you attempting hardware repair.
If the phone does not being fix through firmware restoration, you may then proceed to do a hardware check up and troubleshooting.
The solution below shows which particular components that may need to check, trace and or then replace if found damaged.
Nokia 2710 No Network Signal Problem
Before you may proceed you must see to it that the antenna terminal contact expander were not damaged nor misaligned and it has a proper connection to the antenna module. A poor antenna connection also results to poor, dropping, and or no network signal receptions.
If the antenna connection is okay, you may then proceed to work on the RF Power Amplifier.
Check the RF PA chips supply voltage, this voltage is feed from the phones battery 3.7 volts.
If there is no voltage reading, trace its line paths through to the battery connector positive terminal. Just manage to apply jumper wire on it if the line is cut, fot it is the only option.
If the supply voltage is okay you may then remove the RF amplifier chip. Check all the solder bumps if there is already lifted or damaged. Install a new RF power amplifier. In most cases a damage RF Power Amplifier result to No Network Signal like on nokia 2710 navigation edition.
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