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Here's a solution that may possibly help fix and repair Nokia X3 Failure of LED backlight  on keypad and LCD screen display. This solution completely shows the lines paths and particular components that may need to check and replace if the LED backlight failed to light up. Nokia X3 No LCD and keypad backlight LED repair solution There is a fusible resistor is been connected to the LED backlight circuit in case a short circuit occurred if the device is being damaged by a liquid (Wet Damaged). See solution above marked with number 1. That resistor is the one feeds the power supply from the phones battery. If that resistor is open both keypad and LCD display LED's will not light up for it is the main LED supplying positive voltage. The negative current or voltage has two circuits, one for the LCD (marked with number 4 ) and the other one is for the keypads ( marked with number 3 ). You may check / replace each particular corresponding  connected components highlighted on t...

This solution covers to fix and repair Nokia X3 Hands Free Speaker No audio sounds can be heard or No ringtone sounds. the solution below shows particular components that needs to be check  or by then replace if found damaged. If the loud speaker component is working well when checked up, you may proceed to check this highlighted  components showed below, for it where the audio sounds signals is feeds from the audio IC module. Nokia X3 hand free, Ringer Speaker No Sounds solution Those components were composed of filter coils, it is easy check each of them by using a multimeter in a continuity test method. There are two channels in Hands Free speaker circuit the left speaker channel and the right channel. If only one channel is not working, you may concentrate only on that certain part. Just configure the solution above.

Here's a full solution of Nokia X6 keypad problem and failure. This solution shows the complete line tracks for easy tracing particular keys that stop responding including the camera and volume control switches button.   Nokia X3 keypad keys, camera and volume control button switches solution Each key were group in one line of connection, each connection is filtered by an ESD filter IC. The solution above shows how each certain keys are being connected to the keypad filter IC. There are three keys commonly connected together in one line of connection, therefore if only one or two key is not working, you may consider that the problem lies only on an open path of connection. If there are three and above keys does not work you may considered that the keypad ESD filter is damaged or faulty.

Here's a full display problem solution for Nokia X3, If you ever having tried to replace a new LCD module replacement and updating the firmware by only trying to fix a Display problem, like White screen , Blue screen , blank screen , garbled, saturated and etc on X3. but the display problem still unsolved. This solution below shows the connection of display ESD filter IC to each certain pins of the B2B connector. Nokia X3 display problem solution  Nokia X3 display IC line tracks If the the Display ESD filter chip is damaged this will result to display problem issues. By replacing them will only possibly solved the problem.

Here's a solution for nokia X3 Earpiece Speaker No sounds output can be heard, If you ever struggling to fix or repair this kind of problem and you already replace the earpiece speaker and the flex cable wire but the problem still exists. This solution may help and possibly fix the problem occurred.  The solution shows below the components that may need to check and replace if found damaged. This components is composed of filter coils a fusible resistor with 0 ohms resistance values. Nokia X3 Earpice Speaker Sounds failure problem solution Repair tips: After ensuring that the earpiece speaker is working okay and the flex cable also perfectly fine or having it replaced with a new one but the problem still unsolved. You may check the components indicated on the solution picture above, first check the two resistors, these resistors has 0 ohms value. next check also the filter coils if open and also the capacitors and ESD filter resistor id shorted or not. Check also the ...