Nokia E72 Hard Reset with button combination

This is a procedure on how to hard reset the Nokia E73 through button combination.

Please Note: The result of this process will wipes the entire phone memory and settings fresh to how it was (or should be) when you bought it.You are advise to make a back up of your device and you need to understand that what you are doing this is at your own risk. However, this does not delete all the data stored on the memory card.

The standard format method is this below.

Restore Factory Settings
Dial *7780# to restore all the settings to default. It will request for security PIN, the default code will be 12345.

Reformat Phone System
Dial *7370# to reset Nokia device, only data in System will be affected. To play safe, back up all your data before proceed. It will request for security PIN, the default code will be 12345.



For Hard Reset:
This also restore your Nokia when it frezzes at the nokia screen logo only and didn't go any further.
hard reset is an options but will result to loosing all settings, contacts, data etc…

Turn your phone off and simultaneously press these four buttons circled in red.

* * (asterisk key)
* 3 (numeric 3 key)
* CALL / GREEN key
* On button

This is another method below found out by trial and error when the * + 3 + Call didnt work.

Switch your phone off.

Then, lay it down on a flat surface

With 3 finger of one hand, keep pressed shift, space bar and back space all at the same time

With one finger of the other hand, press the power on button

Do not release neither the 3 keys nor the power key till you see the nokia shakehands animation.

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n73 volume key ways

                           n73 volume key ways

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mobileExsetupv3.4rev1.8.exe.html

mobileExsetupv3.4rev1.8.exe

download

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Nokia 1508,1508i Hardware Repair Solution for USB Not Charging Problem

Here's the Nokia 1508 and 1508i USB not charging problem solution., This shows some  hints on how to fix when the device is unable to charge up  when the charger is being plug-in.

If encountered this problem, you may first try to used any other working charger, and then clean the USB pin connector if still the device wont charge-up.
If seems the above basic procedures wont help, refer to the solution below and locate the highlighted components showed on the following solution below.

Nokia 1508 USB Charge Ways - Components and Connection Tracks

First try to check the fuse, filter coil and the diode (if mounted) for possible damaged. Replace it at once if found faulty. Check and trace also the power supply voltage line paths from the USB pin connector down to the fuse and the filter coil.
If seems all of the components and connection were both okay, you may then try to replace the USB VBUS controller IC. This chip holds and control the USB charging voltage before it feeds to the main charging control chip which is the Power IC.

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Nokia X3-01 MIC Solution, Mouthpiece Microphone Problem

Here's the Nokia X3-01 Mic problem or Not working microphone solution. This solution shows some tips on how to fix the device if such problem occurred.

In fixing the microphone failure on the device , you may try to replace the microphone module first, to easily confirm or determine if the said components is still working or not. If the mouthpiece module seems still working or already tried replacing it but the problem still exists.;
You may hen refer to the solution below and locate the highlighted components, and do some test or check-up procedures.

Nokia X3-01 MIC, Mouthpiece Microphone Failure Solution

The highlighted components were composed of resistors and capacitors, you may then try to check these components for possible damaged. The 1.4 volts is the circuit supply voltage to make it operational and tends the microphone to work properly.

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Nokia 6124c Not Charging Problem Solution

Here's the Nokia 6124c solution for not charging problem such as charger no response and fake charging or shows charging indication but it won't stored on the phones battery.

This solution provides some hints on how to fix the phone if the said charging problem happens. refer to the solution below and start locate those highlighted components on the PCB board and do some tst and check-up procedures.

Nokia 6124c Charging Problem Repair Solution

To fix the device, you may start checking up the charging pin connector, make sure that its terminals are not bended or damaged. Clean it if necessary including the charging pin terminal contact pads on the PCB board.
If the above steps doesn't solved, check the FUSE, Coil, capacitor  and the Diode, then replace if found damaged. If all these components seems all working OK, the next option will be is: Try to reheat, rework the Betty IC, these IC holds as a charging controller circuit. You may then try to replace it, if after reheating or reworking it doesn't solved the problem.

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Nokia 6124c Power ON-OFF Button Switch Jumper Ways Solution

ere's the Nokia 6124c power On/Off button switch jumper solution, and can be used to fix the device if the said button switch terminal solder pads is already been lifted or damaged.

If the said button switch is already been damaged and the solder pads is okay you may just replace the button switch and the device will work again. For lifted solder pads, try and manage to dig out carefully the solder pads layer using a sharp pointed blade, where you can establish a solder to the power switch connection and toughly bond the switch so that it won't move and be damaged again. For severely damaged lifted board, the next option is only by way of applying a jumper wire directly to the Power IC.

Nokia 6124c Power Switch Jumper Ways

The solution above shows the connection line paths of the power button switch of Nokia 6124 classic,. You may notice that the line paths is connected directly to the Power chip,. Re-establishing a connection through this procedure needs a tough soldering skills. So, do not ever try to attempt this method if you do not have the guts to do this kind of process, just ask assistance to your head tech or master technician.

For doing this, you may first remove the Power IC and then manage to mend or apply a tiniest jumper wire to it solder bumps D9 down to the power button switch terminal, so good luck....

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Nokia 6124c Earpiece Speaker Problem Solution

Here's the Nokia 6124 classic solution for not working receiver or earpiece speaker failure. This solution shows some hints on how to fix the phone if the receiver speaker failed to have an audio output or no sound can be heard on the device when making a call.

If encountered to fix this problem you may need to check the receiver speaker first using a multimeter or try to replace a new one  to easily determine if the speaker is still working or not.
You may also clean the speaker terminal contact pads on the PCB board, sometimes a loosen or poor contacts also caused the problem. This sometimes occurred when the device suffered wet or water damaged and or accidentally heavily dropped.

If the above procedures doesn't work or fix the problem, refer to the solution below and do a check up on the highlighted components.

Nokia 6124C Earpiece Receiver Speaker Failure Repair Solution

You may first check and try to replace the filter coil and the ESD protection resistor for possible damaged, and trace its connection line path through to the speaker terminal pads.
If those components seems working okay, the next option is to reheat the power IC with a hot air station.
Reworking or replacing it may possibly also needed if the power IC chip is already faulty or damaged.
You may also trace the connection line paths of the earpiece speaker to where it is being connected from the AVILMA IC while it is being remove from the PCB.

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Nokia 6124c Ringer, Buzzer Speaker Not Working Problem Solution

Here's the Nokia 6124 classic ringer speaker solution that may possibly help fix the device if there is no alert sound can be heard over the phone. This solution provides some simple tips on how to solved this problem if  somehow occurred.

To fix this problem, you may first try to check the speaker using the multimeter or try replacing it with a new one. You may also ensure that the speaker terminal contact pads on the PCB board is clean.
If the speaker seems working and the PCB pads is cleaned but doesn't solved the problem, refer to the solution below and do have a test and check-up on the highlighted components.

Nokia 6124c Ringer Speaker Connection Tracks

you may then check the filter coils and the capacitors, replace if found damaged or faulty. The speaker's audio signal is feed from AVILMA chip. There is a circumstances that you may need to re-heat, re-work or even replace the said chip.

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Nokia 6124c Keypad Problem Repair Solution

Here's the solution for Nokia 6124 classic with keypad not working problem. This solution shows the  connection of the keypad matrix of the phone.

If some or all of the keys stop working or responding, you may first try to check the keypad flex matrix for possible damaged, dirt or oxidation build -ups. Ensure that it is absolutely cleaned. Replace the keypad flex matrix  if severely damaged.
If the keypad flex seems okay but some of the keys either like, 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9 ,0,  #, *, left, call, soft left, up, down, right, soft right or select that does not respond, refer to the solution below and locate the keypad filter IC and do have a check and or replacement procedure.

Nokia 6124c Keypad Filter IC Connection Tracks

The keypad filter IC is mounted or located near the LCD pin connector. You may then try to replace it with a new replacement spare. You can also track down its connection for possible cut-off or open circuit.

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Nokia 6124c Display Problem Repair Solution

Here's the solution for Nokia 6124 classic display problem such as: white screen, blue screen, blank or black empty screen, garbled or saturated screen displays.

To fix display problems of the phone, you may first try to flash, restore or update the device flash firmware, this may solved sometimes to the problems such white screen, blue screen and blank screen displays, unless the LCD module is not damaged or cracked. This process may easily help to determine and confirm where the problem lies, either on the firmware or on hardware failure.

After confirming that the firmware seems okay, you may then do a hardware repair procedures.
First try to replace the LCD screen module,. If the new LCD still shows the same problem, you may then refer to the solution below and do some test and check-up procedures.

Nokia 6124c Display Problem Hardware Repair Solution

You may first check the LCD supply voltages as rated on the solution above 1.8 volts and 2.8 volts. Check the corresponding components where it feeds from, if the voltage is missing.
Locate the display filter IC on the PCB board if the supply voltages were OK. There are two EMI-ESD filter chips mounted near the LCD pin connector. You may then try to replace both of the said chips alternately. There is a possibility that one of these chips caused the problem if the display data signal is being cut-off.

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Nokia 6124c Charger Not Supported Solution

Here's the solution for Nokia 6124 classic with charger not supported problem. This solution shows which certain components needs to replace when such kind of problem occurred.

Refer to the solution below and locate the highlighted component on the PCB board. Then do a replacement for that particular component.

Nokia 6124C Not Charging solution - charger not supported

The BTEMP (battery temperature) resistor which has a value of 47K is connected to the battery BSI (battery stat indicator) terminal. If the said component become faulty or damaged it will result and show "charger not supported" on the device when the charger is being plug-in. Replacing it will possibly fix the problem.

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Nokia 6124c USB Device Not Detected Solution

Here's the solution for Nokia 6124c with USB not detected problem if being connected to the personal computer. This solution also shows the connection line paths of the USB pin connector that may also help fix for lifted or damaged USB connector.

To fix this problem, you may first clean the USB pin connector of the phone, then check for possible damaged or loosen solders of its terminal.
If the USB pin seems okay, you may refer to this solution below and locate the components highlighted on it.

Nokia 6124c USB Pin Connector Jumper Solution

Locate the USB filter IC,  you may check it first and try to clean its surroundings and then do a replacement if found damaged. For lifted PCB board solder pads, you may use the solution above for reconnecting the USB terminal down to the USB filter chip.

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Nokia 6124c Insert SIM Card Solution

To fix this problem you may first clean the Sim card pin connector, then check for possible damaged. Replace if necessary. If the connector already cleaned and seems nothing wrong on it, refer to the solution below.

Nokia 6124c SIM Card Connection Line Paths

You may start checking and tracing the VSIM and Ground pin connection first.
You may notice that the connection line paths of the SIM card pin connector is directly connected to the AVILMA IC, except for the VSIM and Ground pins.
If the SIM supply voltage and ground pis were both okay but the problem still exist, the problem may possibly lies on a faulty AVILMA chip. Try to reheat or rework the chip these option may only fix and solved the problem.

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Nokia 6124c MMC Solution - microSD memory card not detected problem

Here's the Nokia 6124 classic solution for memory card not detected problem. This solution shows some simple hints on how to fix the phone if such problem occurred.

Simple steps to fix the problem: Check and try to flash or restore the device flash firmware. Clean the microSD card slot for possible oxidation build ups.
If the software and basic procedure doesn't solved the problem, refer to the solution below and locate those highlighted components shown and do some test and check-up procedures.

Nokia 6124c MMC - memory card not detected solution

You may first check and rad all the voltages indicated above, these are the supply voltage that make the MMC operation works. If all these voltages seems all working. The problem may possibly lies on the MMC transceiver chip. Reheat, rework or replace it if necessary, these option may only possibly fix the problem. 

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Nokia 6124c Camera, Volume Up and Down Button Switch Jumper Solution

Here's the Nokia 6124c solution for damaged or not working camera, volume up and volume down button switch problem. This solution provides the connection line paths of the said button switches.

To fix this problem you may first visually check the button switch assembly for possible damaged. Just replace it, and carefully re-solder it without lifting the PCB board terminal solder pads.

If the said switches assembly seems okay but it still it does not respond or work. Refer to the solution below and locate the highlighted component on the PCB board.

Nokia 6124c Camera and Volume control button switch connection tracks

Locate one of the keypad filter IC, these also holds for the button switches filtering. And if damaged it also result to camera and volume switches malfunction. By replacing it will only definitely solved and fix the problem.

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Nokia 6124c Camera Flashlight LED Solution

Here's the solution for Nokia 6124 classic flashlight LED not working problem. This solution may help fix the phone if the said camera flashlight LED failed to light, for it shows some simple hints on how to fix the problem.

To repair this problem , you may first try to check and replace the flash light LED, then ensure that its terminal contact connector is cleaned. If the LED seems working, you may then refer to this solution below and do have a check and replacement procedure on some components.

Nokia 6124c Camera Flashlight Solution

You may then check the 3.8 volts supply voltage to the camera flash driver chip. Then check all the corresponding filter coils in the circuit. Just replace if found damaged.
If the voltage reading is okay, and all the filter coils were all seems working. You may then try to replace the flash LED driver chip, this option may only possibly fix the problem.

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Nokia 6124c Camera Hardware Failure Solution

This solution covers to fix Nokia 6124 classic with a not working camera problem, like camera operation failed and camera standby mode  that cannot be solved by means of flash firmware calibration.

If the device camera stop working and cannot be turned ON, or it only shows some errors including a  blank or black screen display. You may refer this solution below after confirming that the problem not lies on software problem.

Nokia 6124c Not Working Camera Problem Solution

To fix the device by means of hardware repair, you may first try to replace the camera module.
Then check the two DC to DC voltage converter and regulator chips.
These chips supply the voltage to the Camera Accelerator IC. You may first try to check the input voltage 3.7 volts, this voltage feeds from the VBAT (battery voltage) line path. Then the output voltages, if there is no output voltage reading, it means that there is a problem on that certain DC converter chip. Replace it if necessary.

If the two supply voltages (1.8V and 2.8V) to the camera IC were both okay, check the camera clock components such as the 47 ohms resistor and the 27 pica-farad capacitor.
You may then try to re-heat or rework the camera accelerator chip or replace it if already found faulty or damaged.

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Nokia 6124c Bluetooth Failure Problem Solution

Here's the solution for Nokia 6124 classic Bluetooth Failure problems. If the device unable to turn the bluetooth ON and shows errors like "bluetooth operation failed",. this solution  may fix the phone if the flashing and restoring the flash firmware or software calibration doesn't solved the problem.

You may refer to this solution below, just locate the highlighted components on the PCB board.

Nokia 6124c Bluetooth Repair Solution

To fix the problem, you may first, check the bluetooth antenna, then check the supply voltages of the bluetooth module chip. If  the supply voltages were both okay, you may then try to re-heat, re-work the bluetooth IC and then replace if necessary. You may also try to replace BT antenna saw filter.

Bluetooth UART signals is feed from the processor chip, there is a possibility that a bluetooth failure is also cause by a faulty CPU IC.

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Nokia 1508 MIC Solution, Mouthpiece Microphone Jumper Tracks

Here's the Nokia 1508 solution for not working microphone problem. This simple solution shows the basic procedure on how to fix the phone if the said microphone failed to work.

Refer to the solution below and locate the highlighted component on the PCB board, then do some basic procedure on how to troubleshoot the problem.

Nokia 1508 Mic Ways- Connection Line Paths

To fix a microphone problem on Nokia 1508, you may first check the microphone module using a multimeter, or try to replace it with  a new one. If the microphone module seems working, check and read the microphone bias supply voltage. If the voltage reading is okay. Check all the corresponding connected components on the MIC circuit, you may start checking from the filter coils, diodes and bypass capacitors.
A poor, gargled and saturated sound quality is also cause by a faulty components on that circuit, you may replace the resistors and capacitors in the MIC circuit.

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