If the touch screen of the Camcorder is not working, please follow the troubleshooting steps.
Please make sure that you're using fully charged batteries.
Turn off the Camcorder and turn ON again and check the operation.
Reinsert the tape and check the operation
Try another tape to check whether the issue persists only with particular tape.
Try resetting the Camcorder by pressing the reset button behind the LCD panel.
Note: In the above figure, 8 represents the reset button.
If the issue persists again, please perform LCD screen Calibration and check if that helps.
Please follow the steps below to perform the LCD Calibration
If the issue persists again, service is required.
I hope this information will help you to resolve the touch screen issue of the Camcorder.