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Kamis, 20 Maret 2014

Nokia X3 No LCD and keypad backlight LED solution

Nokia X3 No LCD and keypad backlight LED solution - do you know that every day there are new gadgets that are created, every gadget has its own way to use it, in blogs Review All Gadget we are reviewing gadgets from various brands ranging from spec, price and how to use the feature, now we are discussing iformasi that you are looking for Nokia X3 No LCD and keypad backlight LED solution this information we collect from many reliable sources so that complete for you. please see.

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Nokia X3 No LCD and keypad backlight LED solution

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
nokia x3 keypad and LCD backlight jumper ways
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 the picture for further troubleshooting.

 Nokia X3 LCD and keypad backlight LED failure solution



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