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Heres a solution that covers for Nokia 6700 classic LCD screen display problem issues, such as white screen, blue screen, blank or black screen, garbled, saturated or corrupted screen displays.
This solution may only works and can be applied after ensuring that device firmware is already restored or flashed, upgraded or updated. And also tried to installed a new replacement LCD module but the problem still exists. The solution below showed the LCD pin connector connection across the two LCD ESM-EMI filter ICs.



There are two ESD-EMI filter used in Nokia 6700 classic display circuit and mounted near the LCD pin connector. You may check the filter chips and trace each corresponding line paths through to the LCd pin connector before trying to replaced a new replacement  EMI filter.

This solution may used as a guide to fix and repair Nokia 2630 LCD screen display problems like white screen, blue screen, blank or empty screen displays.

After ensuring that the LCd screen module is okay or already tried installing a new replacement and then also ensuring that the device firmware is successfully flash or restored,
you may check and or replace the component showed on the solution below.




Check the LCD Pin Connector, make sure that is free from dirt and oxidation build up.
There are three Resistors used on the display data connections, this reistors has 100 ohms resistance value, you may check or replace this components. If the three resistors is okay and the problem still exists, you may suspect that the problem may lies on a faulty UPP CPU IC.