Nokia 5000 LCD display backlight LED failure.Nokia 5000 LCD display backlight LED failure.

23:10 | |

An lcd display modules will result to a blank or black screen display when an LED backlight failed to light up..

Here' the repair guide solutions to repair Nokia 5000,5000d LCD display backlight LED failure. This repair guide shows the particular locations of the components that might possibly damaged when the LCD display backlight LED will unable to light up.

An led driver ic located at the bottom side of the PCB board assembly which is driving the voltage and current to light the LCD display backlight LED's, if the supply voltage feeds from the cell phone battery is cut or missing this chip will unable to function.

The the output voltage of the led driver IC is connected to pin 3 (positive) and pin 6 (negative) of the LCD display interface connector.

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Nokia 5000 LCD display backlight LED failure.Nokia 5000 LCD display backlight LED failure.

23:10 | |

An lcd display modules will result to a blank or black screen display when an LED backlight failed to light up..

The the output voltage of the led driver IC is connected to pin 3 (positive) and pin 6 (negative) of the LCD display interface connector.

Serve as quick repair guide for the following: 5000 Speaker Problem, 5000 Speaker Ways, 5000 Speaker Jumpers, 5000 Earpiece Problem, 5000 Earpiece Ways 5000 Earpiece Jumpers

22:53 | |

Here's a repair guide, a simple solution to fix and repair Nokia 5000 , 5000D earpiece speaker problem. this solutions shows the earpiece components connection line paths ( speaker ways), Including the inner connection beneath the terminals of power management IC (power IC).

Repair hints:

1. Check or replace the earpiece speaker

2. Check or replace the coils and capacitors.

3. check the line pats to each corresponding component's connections

from the coils to the speaker terminals.

4. Remove the power IC, check the line pines of ball bumps pin P11 and pin P12, to the coils

5. Rework or reball the Power IC.

Serve as quick repair guide for the following:

5000 Speaker Problem,

5000 Speaker Ways,

5000 Speaker Jumpers,

5000 Earpiece Problem,

5000 Earpiece Ways

5000 Earpiece Jumpers

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Serve as quick repair guide for the following: 5000 Speaker Problem, 5000 Speaker Ways, 5000 Speaker Jumpers, 5000 Earpiece Problem, 5000 Earpiece Ways 5000 Earpiece Jumpers

22:53 | |

Repair hints:

1. Check or replace the earpiece speaker

2. Check or replace the coils and capacitors.

3. check the line pats to each corresponding component's connections

from the coils to the speaker terminals.

4. Remove the power IC, check the line pines of ball bumps pin P11 and pin P12, to the coils

5. Rework or reball the Power IC.

Serve as quick repair guide for the following:

5000 Speaker Problem,

5000 Speaker Ways,

5000 Speaker Jumpers,

5000 Earpiece Problem,

5000 Earpiece Ways

5000 Earpiece Jumpers

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Nokia 5000 ON/OFF switch key tracing guide Power Switch Jumper Ways

22:44 | |

If Nokia 5000 will unable to power up when switching it ON even the battery is at full charge or it shows charging indication on the LCD screen display but fails to power up. The problem may happen or occurs if the keypad membrane is corroded or the power ON-OFF switch line is cut or damaged due to water damaged or suffered from being accidentally dropped. This solution will help to trace the line paths across from the key switch pad to the particular components of which it is being connected.

Nokia 5000 ON/OFF switch key tracing guide

Power Switch Jumper Ways

Nokia 5000 ON/OFF switch key tracing guide Power Switch Jumper Ways

22:44 | |

Nokia 5000 ON/OFF switch key tracing guide

Power Switch Jumper Ways

Nokia 5320 Keypad flex matrix connection line pathsNokia 5320 XpressMusic Keypad flex matrix connection line paths

22:32 | |

Here's the Nokia 5320 solution for Not working navigation or numeric keypads keys. This guide shows some step by step procedures on how to fix if the keypad keys aren't responding.

The Nokia 5320 xpressmusic keypad interface comes with flex matrix assembly, so you may need to check first the keypad matrix, clean the keypad membrane, or replace it with a new keypad replacement. The solution below also shows the connection line paths of each particular keys. The inner layer core of the keys pad is showed in rows and the outer core which is the column. This may help to trace if there is only one or two and not more than four keys that are not working.

Nokia 5320 Keypad flex matrix connection line paths

If however, if you already confirmed that the problem doesn't lie on the keypad flex, you may refer to the following solution below and check the highlighted components.

You may also first check the pin connector for possible damaged, clean it as well if necessary. There are four 47 ohms resistors and ESD protection components at the bottom of the pin connector. You may need to check each of this components or replace it. If the above solution doesn't fix the problem, the possible faulty is the CPU IC, reheating or reworking it might only fix your Nokia 5320 keypad problem.

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Nokia 5320 Keypad flex matrix connection line pathsNokia 5320 XpressMusic Keypad flex matrix connection line paths

22:32 | |

Here's the Nokia 5320 solution for Not working navigation or numeric keypads keys. This guide shows some step by step procedures on how to fix if the keypad keys aren't responding.

Nokia 5320 Keypad flex matrix connection line paths

If however, if you already confirmed that the problem doesn't lie on the keypad flex, you may refer to the following solution below and check the highlighted components.

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Nokia 2720 fold LCD flex ribbon cable connector Nokia 2720 fold LCD flex ribbon cable connector Nokia 2720 fold LCD flex ribbon cable connector

08:35 | |

Here's the basic Nokia 2720 fold solution for LCD screen display problems such as the following like white empty screen, blue screen, garbled or saturated screen, blurry or blur screen displays and others as long you can hear that the phone is still working, like you can still hear the welcome tone, the keypad tones etc.

This may work if the LCD is not damaged, cracked or broken. For beginners you may still need an LCD screen replacements for quick and easy technique by just confirming that the problem does not lies on the LCD screen. You may also check the device firmware first., if the firmware is okay then proceed to the given solution below.

Hints for troubleshooting the Nokia 2720 Display problems this may apply on the main LCD screen and the catalina LCD:

Check the flex ribbon cable assemblies for possible damaged.

Try to replace or install a new working LCD screen panel.

Nokia 2720 fold LCD flex ribbon cable connector

If the LCD and flexible cable confirmed that nothing wrong with it, proceed to the PCB board hardware troubleshooting below.

The solution below shows the connection line paths of the display data signals from the filter resistors through to the LCD flex pin connector. This is only the brief solution for we start our troubleshooting here.

First check the VIO and VFLASH supply voltages, you can read about 1.8V and 2.8V on that spots of the certain pins or through the capacitors. Then check all the resistors and trace its connection down to the LCD flex connector. This may useful especially when the device suffered wet or water damaged, replace and apply jumper if necessary. If this solution doesn't work, the problem may possibly then lies on the processor IC, it is because the display data signals is feed and comes from through it. A re-hot, re-work or replacement to the CPU IC will only fix the problem.

Okay, there you have it, the basic steps procedure in troubleshooting LCD screen display problem on Nokia 2720 fold. This once again created through by request of our colleagues on our Nokia solution request box.

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Nokia 2720 fold LCD flex ribbon cable connector Nokia 2720 fold LCD flex ribbon cable connector Nokia 2720 fold LCD flex ribbon cable connector

08:35 | |

Hints for troubleshooting the Nokia 2720 Display problems this may apply on the main LCD screen and the catalina LCD:

Check the flex ribbon cable assemblies for possible damaged.

Try to replace or install a new working LCD screen panel.

Nokia 2720 fold LCD flex ribbon cable connector

If the LCD and flexible cable confirmed that nothing wrong with it, proceed to the PCB board hardware troubleshooting below.

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Nokia 2720 hardware repair solution for not working MIC (microphone) problem

08:29 | |

Here's the Nokia 2720 hardware repair solution for not working MIC (microphone) problem. This solution shows the MIC tracks connection line paths., and certain components that holds for 2720 fold nokia mobile phone microphone circuit.

Just refer to the solution below then locate the highlighted components on the PCB board and follow some procedures we provide.