Clean the board again and inspect it!!It's the touchscreen controller either the the connector on the board,if reflow won't help ---replace the touchscreen connector!!!!also Make sure the LCD and digitizer sits well and nothing creates pressure on them!! Peace
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Clean the board again and inspect it!!It's the touchscreen controller Ic either the the connector on the board,if reflow won't help ---replace the touchscreen IC !!!!also Make sure the LCD and digitizer sits well and nothing creates pressure on them!! Peace
Clean the board again and inspect it!!It's the touchscreen controller either the the connector on the board,if reflow won't help ---replace the touchscreen connector!!!!also Make sure the LCD and digitizer sits well and nothing creates pressure on them!! Peace