U2U GSM ALL IN ONE: September 2011

Friday, 30 September 2011

Nokia X2-01 Keypad Connection Tracks and Filter IC Jumper Ways Solution

Nokia X2-01 Keypad Connection Tracks and Filter IC Jumper Ways Solution

Well again here's a solution that may help fix Nokia X2-01 keypad not working problem. This solution provides and shows us the connection line paths of each QWERTY keys and navigation keys, which is easy for us to trace when there is/are certain keys that is not responding or working.

On Nokia X2-01 keypad matrix, the inner core and outer layer of each keys were highlighted in color, those color represent where and which group they being connected. The lower photo is the two keypad EMI filters which if damaged it will result a keypad malfunction on Nokia X2-01.

Here's some hints on how to fix Nokia X2-01 keypad not working problem:
1. Check the device firmware, try to re-flash or update.
2. If the device suffered wet damaged, clean the keypad matrix and the keypad membrane.
3. If there are only few keys that is not working, trace the connection between to the other keys...
4. If the connection seems okay, the last option is to check the Keypad filter IC's.
Try to rework it first, check the solder ball bumps for possible damaged..
5. Replace the keypad filter IC.

Nokia X2-01 Keypad Connection Tracks

Nokia X2 All Solution --->

Keypad Problem Repair Solution Guide on Nokia X2

his picture repair guide may help to diagnose and repair on nokia X2 mobile phone handset.
Just follow the instructions stated on the picture itself.

Keypads key configuration by Rows and Columns

Row 0 = soft left, left, soft right, right
Row 1 = send, up, , down, camera
Row 2 = 1, 2, 3, select,
Row 3 = 4, 5, 6, volume up
Row 4 = 7, 8, 9, voume down
Row 5 = * , 0, #
Row 6 = music play, music forward, music rewind

Column 0 = soft left, send, 1, 4, 7, *, music play
Column 1 = left, up, 2, 5, 8, 0, music forward
Column 2 = soft right, 3, 6, 9, #, music rewind, camera
Column 3 = right, down, select, volume up, volume down,

Monday, 26 September 2011

Nokia 1280 Display Problem Jumper Ways

Here's a solution for Nokia 1280 display problem such as white or empty screen, blue screen display that is not caused by an LCD screen module or the flash firmware.

his solution below shows theline paths of the nokia 1280 LCD scree display connection. You can use it for quick tracing and check-up procedures.

Nokia 1280 display jumper ways

Nokia 1280 full display line tracks

By using the solution above , you may check each of the corresponding display connection line paths. And then replace or mend to reconnect an open circuit to fix the nokia 1280 display display problem.

Nokia 5130 keypad solution, keys and switches connection tracing guide for repair

Here's the Nokia 5130 complete keypad solution, this solution shows each certain keypad key connections including the button switches such as the volume up and volume down control buttons and also the MP3 player button switches such as the Start/stop, forward and rewind button switches.

The solution may help repair and fix nokia 5130 keypad malfunction and button switches failure. You may check, trace particular keys which are not able to function by using the repair guide below. Each group of colors indicates that they are connected with each other. So just locate where that particular non working key being connected and mend it found cut or open.

Nokia 5130 xpressmusic keypad keys malfunction full tracing solution

The Power ON/OFF key is isolated and not connected to other group of key connection for it only holds for switching or powering up the device. There is an open spots near the keypad filter IC that the power ON and OFF key can be connected when the power key fails or or if the line is cut or open.

Nokia 5130 ON-OFF power key jumper ways

And here's the internal connection of the keypad filter IC, you may check and apply a temporary jumper on this components to ensure that the inner line paths from the application processor is not being damaged.

Nokia 5130 keypad filter IC jumper ways

5130 Earpiece, Hands free and Ringer Speaker Solution

Here's the solution may help to fix and repair Nokia 5130 xpressmusic hands free speaker and ringtone ringer speaker failure. this repair guide shows the components might get damaged if there is no audio sounds can be heard over the speaker. But before checking and replacing those components highlighted on the picture ensure that the loud speaker is properly check and ensure that it is working fine.

Nokia 5130 xpressmusic hands free speaker sounds failure solution

And this solution below covers for earpiece speaker problem, if there is no audio sound can be heard over the earpiece speaker make sure to check and replace the components highlighted on the picture, its only a filter coil just do a continuity check on that part. But before that ensure that the earpiece speaker is is working well fine.

Nokia 5130 xpressmusic Earpiece speaker audio sound failure solution

Nokia 5130 xpressmusic hands free speaker sounds failure solution

5130 insert Sim Card Problem solution

Here's the full tracing line paths for repairing Nokia 5130 xpressmusic Insert sim card problem. This solution shows the primary tracks paths for tracing the sim connector pin to the inner part of the circuit component such as the power IC(AVILMAS)
This guide may help fix insert sim card that shown on the LCD screen display even when tried inserting any kind of well working sim card on it.

The highlighted spots indicated on the picture guide above is the sim voltage supply (VSIM) that is feed from a chip capacitor near the power IC. All the remaining signal such as the clock, reset and data were all connected directly to the inner solder ball bumps of the power IC. So the only way to trace this lines is to remove the power IC then reball it and inplace it back again.

5130 insert Sim Card Problem solution

5130 Mic problem repair solution

This solution guide may help repair Nokia 5130 mouthpiece microphone failure.

The components highlighted on a picture is where the microphone audio signal flow first before it feeds to the whole circuit. You may check and replace those component, it composed of a filter coil and a resistors.

5130 mic problem repair solution

Solution pack for Nokia 5130 Xpressmusic hardware repair.

An example of this solution picture below is for memory card problem repair guide.

This solution packed covers the following picture guide for locating components on the following damaged hardware problem issues: MMC, bluetooth, local mode, backlight, hands free and keypad.

Solution pack for Nokia 5130 Xpressmusic hardware repair.
Nokia 5130 MMC memory card solution

Nokia 5130 Not charging solution

For a charger no response or indication when the battery charger is plug in to the nokia 5130 device, this solution may help solve the problem.

This solution may simply show which particular components to check and replace during repair. The picture guide above shows the location of the chip fuse , filter coil, filter capacitor and a protection chip diode that might damaged when the charging problem occurred.

Not charging solution for Nokia 5130

Nokia 5130 Dark Screen display - No LCD Backlight Solution

This solution may possibly help fix nokia 5130 that has No LCD Display backlight LED and results to a dark screen displays.
If ever encountered this problem and then tried installing a new LCD screen module but still a dark screen display occurred and the backlight LED doesn't light up; This solution below shows the circuit components that holds the Nokia 5130 backlight LED.

You may check those corresponding components highlighted on the solution above.
Trace each particular line paths and check the supply voltage.
The LED driver chip when damaged will shutdown and all backlight LED's unable to light up including the keypad backlight LED's.So if both keypad and display backlight failed you may then suspect that the problem lies on the LED driver IC. But first, check the supply voltage and filter coils before attempting to replace it.

Solution for Nokia 5130 LCD Display Backlight LED that Does Not Working

Sunday, 25 September 2011

Nokia 5130 LCD Display jumper ways solution

Here's the LCD Display line paths tracing guide for heavy a and deep troubleshooting Nokia 5130 LCD Screen Display problem such white screen, blue screen, blank or black screen, garbled and saturated screen displays. This solution shows the exact location where each corresponding LCD pin connector connected to a particular components for easy line tracing procedures.

This first solution shows the voltage supply to the LCD display module that feeds to the pin connector. You may check, trace this particular voltages first.this also includes the LCD display backlight LED corresponding current and voltage pin configuration. If this voltages are not present this will also result to display problem issues.

And this solution corresponds to each and every LCD display data signals connection to the pin connector that being feeds from the application processor (CPU IC) through to the LCD display module.

Nokia 5130 LCD display pin connection configuration ( display jumper ways )

All these lines is connected to an Filter chip resistors that have a resistance value of 33 ohms per each resistor.You may check, trace, replace this particular chip resistor if found damaged. And if found an open line paths, just try to manage applying a jumper wire on it for that is the only option.

Saturday, 24 September 2011

Nokia C1 Solution for C1-01 MIC microphone mouthpiece not working

If encountered to fix a Nokia C1-01 microphone problem, here's the solution that might possibly solved the problem. The Solution below shows the microphone module on the Nokia C1-01 PCB board that needs to check or replace if found damaged.

The MIC module is located and mounted at the bottom of the PCB board layout. near the antenna terminal contact pins.There are four components being mounted near to it and this are composed of filter coils and an ESD protection resistor or capacitors.

You may check the filter coils first, if the coils is open or already busted replaced it.
If the filter coils were okay you proceed to replace the MIC module if found damaged.

Nokia C1 Solution for C1-01 MIC microphone mouthpiece not working

You may check the filter coils first, if the coils is open or already busted replaced it.
If the filter coils were okay you proceed to replace the MIC module if found damaged.

Nokia C1 Solution, C1-01 Earpiece Speaker No Audio Sound

Here's the solution for Nokia C1-01 Earpiece Speaker problem that has no audio Sound can b heard on it during a call is made. If this problem there is a possibility the earpiece speaker is already busted or damaged due to audio signal overdrive. Some factors are of dirty or oxidation build up on the earpiece terminal contact pads.

This solution below shows which particular components needs to be check for hardware repair troubleshooting.

Hints for repair:
Check the earpiece speaker first by using a multimeter set to X1, you can hear a crackling sound when hitting the two terminal with the tester's probes.
Clean the earpiece terminal contact pads on the C1-01 PCB board.
If the earpiece speaker is working and the contact pads is already cleaned but still the problem still exist. You may used the solution above and check those highlighted components, it is composed of filter coils, an ESD protection resistors and bypass capacitors.

Nokia C1-01 Earpiece Speaker Solution

Nokia C1-01 microSD Memory Card MMC not detected solution

This solution below can be used to fix Nokia C1-01 microSD memory card not detected problem issues, this problem may possibly occurred if the device suffered wet or water damaged. If this happens the Nokia C1-01 will not been able to detect any microSD memory card that inserted to it and it shows on the display the "NO memory card is inserted or memory card not detected".

The solution below below shows the location of certain component that needs to be check or replace to solve nokia C1-01 memory card not detected issues.

The Nokia C1-01 MMC IC is located and mounted just besides the microSD slot. By replacing the MMC IC will possibly fix a damaged Nokia C1-01 that does not accept or read any microSD memory card.

Nokia C1-01 microSD Memory Card Not detected

Nokia C1-01 LCD Screen Display Problem Jumper Ways Solution

This is the Nokia C1-01 Solution for an abnormal display problem, such as blank or empty screen, garbled or dark screen display. This solution may works if you already tried installing a new LCD screen module and tried updating the device firmware but still the screen went wrong.

Refer to the solution below and do trace the LCD soldered pads connector down to the corresponding components such as the resistors and filter coils. The resistors has as resistance value of 22o ohms each. The VAUX is 2.8 volts and the VIO is 1.8 volts, you may also check these voltages.
This also includes the connection line paths of the LCD backlight LED, to fix if the white LED at the back of the LCD doesn't turns ON and shows a dark display.

C1-01 LCD Display Problem Solution

Nokia 2690 Earpiece Speaker No Audio Sounds Solution

ere's the solution that may possibly help fix and repair Nokia 2690 Earpiece Speaker No audio sound output problem.

Nokia 2690 Earpiece Speaker No Audio Sounds Solutio

You may need to ensure and check that the earpiece speaker is working before replacing those components composed of filter coil and an ESD filter. If all of those components were all seem good the problem may lies on a broken line paths from the power and audio IC (AVILMA). So , for further troubleshooting you may need to rework the power supply chip that might possibly fix and repair Nokia 2690 Earpiece Speaker Sounds problem.

Nokia 2690 Earpiece Speaker No Audio Sounds Solution

Nokia 2690 Ringer , Hands Free Speaker Problem -Jumper Ways Solution

Here' the Nokia 2690 Solution for not working ringer, buzzer or hands free speaker problem. This solution may possibly help fix the phone if such problem occurred like no ringtone can be heard and the loud speaker doesn't work.

To fix this problem, you may first check if the speaker is working or not, or try installing a new one on it. Clean also the terminal contact pads. If the speaker is okay, you may refer to the solution below and check the components where the speaker is being connected.

Locate all the highlighted components on the solution above, this components is where the speaker is being connected. You may check all filter coils and ESD protection diode then replace if found damaged.
If all the components above seems all okay, trace each connection line paths then mend to reconnect it back if found opened or cut.
If the above procedure does not fix the problem, the possible faulty is the AVILMA IC., Try to reheat it first, then rework and replace if necessary. This option may only help fix the Nokia 2690 Ringer or hands free loud speaker problem.

Nokia 2690 Ringer , Hands Free Speaker Problem Solution

Nokia 2690 Mic Problem Complete Jumper Ways Solution

Here's the Nokia 2690 Solution for not working mic problem. This solution below shows the complete connection tracks of the microphone that can be used for deeper microphone problem troubleshooting.

To fix or repair mic problem on Nokia 2690, you may first check the microphone module using a multimeter or replace it with a new one to securely confirm that the microphone is still working or not damaged.
If the Microphone is okay, clean the mic's terminal contact pads. Refer to the solution below and do some check and test procedures.

Nokia 2690 Mic Problem Repair Solution

Nokia 2690 Charger Not Supported Problem Repair Solution

Here's the Nokis 2690 Solution for charger not supported problem. This problem shows if the device battery charger is being plug-in and it shows "charger not supported" on the display.

To fix this problem, you may first try to replace the phones battery and use another working charger.
If the problem continue occurred, refer to the solution below and try to replace the highlighted component.

Locate the component's showed on the solution above and then try to replace it, it is the battery temperature (BTEMP) 47K resistor. When the damaged it will result to the Nokia 2690 charger not supported problem.

Nokia 2690 Charger Not Supported Problem Repair Solution

Nokia 2690 White Screen, Blue and Blank Screen LCD Display Problem Solution

Here's a solution that may possibly help fix and repair Nokia 2690 LCD Display problems like white screen, blue screen, black or blank screen displays. If you're having tried to replace a new LCd display module replacement when trying to repair display problem on Nokia 2690 but nothing happens and the problem still exists. This solution below shows the connection of LCD display data signals from the application processor chip to each single pins of the LCD connector.

The solution above shows a detailed information of the display data signal being feeds from the application processor IC to the LCD display pin connector. Each line is been filtered by a resistor that has resistance value of 33ohms each. You may check each resistor and trace each particular line paths, replace the resistor if found damaged or by then apply a jumper for an open line or cut connections.

2690 LCD display connection line tracks ( display jumper ways)

Nokia 2690 Solutions - Hardware Repair manuals

Hardware problem repair manuals for the following hardware failures on Nokia 2690.
Memory card problem - no memory card detected LCD display problem - no display, blue display, white screen display.
Local mode / test mode problem - showing only test mode or local display.
Dead Set problem - unable to power up the device
Buzzer / ringer problem - no ringtone audio sound can be heard
Charging problem - shows no charging response when charger is plug-in, fake charging, it shows charger not supported
Hang/ restart problem - hang or frozen on nokia logo only, often restarted.
Insert SIM card problem - unable to detect sim card when inserted, shows Insert simcard on display.
Keypad problem - keys not working, keypad malfunction, the keys stop responding.
Network Signal problem - No network signal, low signal, unable to send and receive call and text message.

DOWNLOAD NOKIA 2690 Solution

Nokia 2690 keypad IC jumper ways and line tracks, full solution

Here's the full and complete solution for Nokia 2690 Keypad line tracks and keypad filter IC jumper ways including the power on-off key connection. This solution below may possibly help fix and repair a certain keypad malfunction that stop responding on a damaged Nokia 2690 cell phones.

Ensure that the keypad membrane is perfectly clean before trying to trace each corresponding keypad keys that is not responding. Majority of each group of connection has three keys are connected together, therefore if only one or two keys are not working, the problem may lies on open line tracks. If more than three or all of keys are not working the problem may lies on a damaged EMI-ESD filter chip.

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Nokia 2690 keypad IC jumper ways and line tracks, full solution

Nokia 2690 Display Light Problem Solution

Here's the Nokia 2690 hardware solution for LCD display light problem. This problem may result to show a dark or black screen display for there is no illuminating backlight LED on the back of the LCD screen.

To fix the dark screen display problem, you may first try to replace or install a new LCD screen module, to easily confirm if the LCD's backlight LEDs were still working or already damaged.
You can also check the LED's using the multimeter if you can manage without damaging the LCD flex connector.
If the newly installed LCD still shows the same problem and the LED light doesn't light up, refer to the solution below and locate the highlighted components on the PCB board.

Check the filter resistors and capacitors connected to positive and negative supply voltage of the LED pins.
Trace also each connection line paths were it is being connected to a certain components such as the resistors. Check and replace also the chip transistors.
If both keypad LED isn't working also, check the VBAT battery voltage on the filter coil and check also the coil for possible damaged. If the voltage reading is okay, replace the LED driver IC, for it also control the supply voltage both on LCD and Keypad Light LED.

Nokia 2690 Display Light Problem Solution

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Nokia C2-03 White Screen, No LCD Screen Display Problem Solution

How to fix Nokia C2-03 White screen and other display problems such as blue screen, blank or empty screens.
If you try to fix firmware problem, simply flash the phone to it's original firmware version. The firmware version for Nokia C2-03 is RM-702.

If you do have hardware problem, follow the simple hints below.
1) Check the flex and LCD pin to pin connections, ensure that it is properly in good contact. A weak or loosen contacts will cause the display problem.
2) Check the LCD screen for possible damaged or cracked. If you ain't sure better have a extra LCD at hand just for a quick test.

3) Check the flex ribbon cable for possible damaged. Since Nokia C2-03 is a slider phone, the possibility of display problem is cause by flex failure.
4) If both the flex and LCD were already confirmed working and okay. You may then proceed in troubleshooting certain components on the Nokia C2-03 PCB board.
5) See the solution below, check the highlighted components surrounding, clean it if there is an oxidation spotted.

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Nokia C2-03 Keypad Light LED Problem Solution

Here's the some hints that may preferably help fix in troubleshooting Nokia C2-03 keypad back light failure.

1. Check the whole area and surrounding components for the keypad white LED for possible damaged, cracks, oxidation etc. Clean it first if necessary.
2. Check both of the two LED's using a multimeter. Replaced if already damaged.
3. If the LED's light are still working check the (VBAT 3.7V) battery voltage line paths.
4. Check each of the LED's positive and negative connections.
5. Check the connected resistors and coils, re-solder or replace if damaged
6. Check the LED driver transistors. Re-work or replace if necessary.

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Nokia C2-03 Keypad Light LED Problem Solution

Nokia C2-03, C2-06, C2-08 Speaker Problem Solution

Here's a hints on how to fix no speaker audio problem on Nokia C2-03 or C2-06 and C2-08 dual sim card phone.
1) Check the speaker using a multimeter. Replace if already damaged. A distorted audio sounds is cause by a weak speaker... or it is already burned out. (internal coil is damaged)
2) If the speaker is good and seems no problem, ensure that the terminals were not misaligned. Then clen the speaker terminal contact pads for possible oxidation build ups (this might weaken the connection).
3) Check each of speaker+ and speaker- corresponding connection line paths accross to each components where it is being connected.
4) Check all the filter coils and capacitors connected to it. Replace if found damaged or already corroded.

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Nokia C2-03, C2-06, C2-08 Speaker Problem Solution

Nokia C2-03, C2-06, C2-08 Memory Not Detected Solution (MMC IC Jumper Tracks/Ways)

Here's some hints on how to fix Nokia C2-03, Nokia C2-06 or Nokia C2-08 Dual SIM card, slider phone with touch and type features.
1) If memory card is not detected error shows, try to use another working memory card. The memory card might be corrupt or already damaged.
2) Check for possible damaged and or clean the memory card connector pins and its surroundings components on the PCB board.
3) Check the firmware, reflash, restore or update to latest version if necessary.
4) Check, resolder, rework or replace the memory card filter chip (MMC filter IC)

Nokia C2-03, C2-06, C2-08 Memory Not Detected Solution
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Nokia C2-03, C2-06, C2-08 Microphone Problem Solution (MIC Jumper Ways Tracks) U2U GSM

Nokia C2-03, C2-06, C2-08 Microphone Problem Solution (MIC Jumper Ways Tracks)

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Nokia C2-03, C2-06, C2-08 Microphone Problem Solution (MIC Jumper Ways Tracks)

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Nokia C2-03, C2-06, C2-08 Not Charging Problem Solution

here's how to fix a not charging problem for Nokia C2-03, C2-06 and C2-08:
1) Ensure and check first the wall charger, battery and battery connectors for possible damaged.
2) Check the charging pin connector (DC jack), clean it including the terminal contact pads. Replace if necessary.
3) Check the charger voltage protection components such as the fuse, diode, filter coil and capacitors. Replace if found damaged.
4) Trace the charger voltage line paths for possible open circuit or cut-off lines.
5) Check the charging voltage transistor switching circuits, including the 0.15 ohms fusible resistor.

Nokia C2-03, C2-06, C2-08 Not Charging Problem Solution

Nokia C2-03, C2-06, C2-08 Charger Not Supported Problem Solution

Here's how to fix Charger Not Supported Problem on Nokia C2-03, C2-06, C2-08 Dual SIM phone.
1) Check the battery connector terminals, clean if necessary.
2) Locate the two highlighted components, those are resistors and holds as battery temperature (BTEMP) indicator. Try to replace first the rated 47K resistor then the 120K.