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Nokia N97 Touch Screen Not Working solution
Here's the solution for Nokia N97 touch screen doesn't work or respond problem. This solution may works if already tried to restore, flashed, upgraded or updated the device firmware and also tried to install a new replacement touch screen module but the touch screen still won't work.
The solution below shows the location of certain components that need to check or replace if the touch screen of Nokia N97 stop to respond or not working.
There is an ESD filter IC is being used on the touch screen control circuit, located beside the LCD pin connector. You may check this filter IC and replace if found damaged.
If the Filter IC already replaced but the problem still exists, you may proceed to rework the IO expander IC, the IO expander IC also controls the keypad keys. If both keypads and touch screen won't work you may suspect that this chip is faulty or damaged.
The solution below shows the location of certain components that need to check or replace if the touch screen of Nokia N97 stop to respond or not working.
Nokia N97 Touch Screen Not Working Repair Solution
There is an ESD filter IC is being used on the touch screen control circuit, located beside the LCD pin connector. You may check this filter IC and replace if found damaged.
If the Filter IC already replaced but the problem still exists, you may proceed to rework the IO expander IC, the IO expander IC also controls the keypad keys. If both keypads and touch screen won't work you may suspect that this chip is faulty or damaged.
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