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This repair solution below may possibly help fix and repair a damaged Nokia N78 displays like white screen, blues screen, garbled, blank or black screen and some related display problems and failure.




Repair Hints: There are two Display filtering chips used in the circuit, if already tried and replaced those both filter IC you may then also rework or replace the Display IC marked with number 3.

 If having tried to repair Nokia 5700 display problem issues and you installed a new LCD display module replacement on it but the problem still exists, This solution  may help fix and repair Nokia 57000 display problem issues like white screen, blue screen, blank screen, garbled screen and other related display problem that is not caused by the LCD display module.


There are two ESD-EMD filter is connected in the display circuits, If these ESD filter has been damaged it will result to display problem issues. Replacing it will possibly solved the display problem issues like white screen, blue screen, blank screen, garbled and saturated screen displays.

A display problem like, white screen (WSOD), blue screen, blank or black screen, saturated and garbled screen displays, can be cause  by a  faulty or damaged LCD screen display and can be fix by installing anew LCD replacement on it. Sometimes an interrupted firmware also causes the problem and can be fix by restoring the device firmware. IF all of the above does not solved the problem you may then consider that the problem lies on the hardware components failures.

The solution below will show us a particular hardware components that holds and control the display data signals on Nokia N97 mini which enable the LCD screen to work.


The LCD display connector may also cause the problem if being corroded and oxidation occurs, cleaning it  first is a good idea.
If the device suffered like wet damaged, accidentally heavily dropped the display controller IC and its particular line paths  may also possibly damaged. Reworking and tracing each corresponding line tracks  will help fix display problem on Nokia N97 mini.

Heres 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 youre 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.

Heres a solution to solved Nokia 5030 xpressradio Display problems such as White Screen, Blue scree, blank screen, black screen and any related display failures.
This solution shows the display line tracks connection from a certain components to the LCD pin connector.


The display data signals is feed from the application processor then each line is filtered by resistor before it gets through to the LCD module.

This solution may used to troubleshoot and repair a damaged Nokia 7230 that result Display problem issues like white screen, blue screen, blank or black screen, garbled and saturated screen displays that is not due to LCD Screen Display Module problem.
This solution may possibly help fix and repair Nokia 7230 after ensuring that the LCD screen display module is working okay and or already tried installing it a new replacement spare LCD module.



The solution above shows the Line tracing spots from the LCD flex pin connector to a certain components On Nokia 7230 PCB Board. You may check and trace this line tracks and check the corresponding components connected to it. If all the line tracks is okay. You may then suspect that the application processor or CPU is faulty or being damaged.
Please take note that handling CPU IC is  complicated and needs expertise, so observed extra precautions.