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[pabdanjs]

Hi everybody, this days i've had problems with the calibration of the touchscreen of my calculator.. I replaced the batteries but it still doesn't work..I didn't drop it and the touch screen is doesn't present scratches or something like that... i've seen that the screen was walked down, because when I touch the crosses above it works, but the screen doesn't recognize my touches with the crosses below. Please help me!, i have a really important test on monday and I depend only in this calculator. Thank you!.