Here's the solution that shows the internal solder ball bumps connection on Nokia 7510 supernova. This may help as guide to repair Nokia 7510s display problem. These two display filter IC's were mounted at the side of the PCB board near of the RAPS application processor IC.
Nokia 7510s display problem solutions
This solution guide shows the LCD display filter and keypad filter IC's internal solder ball bumps connections.
If the7510s may shows a black or blank screen, blue screen and white screen display and after making sure that problem on the LCD screen module, you may need to replace either one or both of this two display filter IC's.
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