how to repair unresponsive touch screen

{"cid":"91193213","title":"Total Station Display LCD Screen Keyboard Panel Replacement Service Touch Digitizer Repair Survey","imgUrl":"https:\/\/img.chinax.com\/nimg\/61\/a1\/a4da97cb723d06e05aaf4dd4909b-200x200-1.jpg","attrs":{"Price":"USD 80-450 \/ Unit","Brand Name":"GeoMaster","Model Number":"DSP-REP-005","Minimum Order Quantity":"1 Unit","Delivery Time":"3-7 working days for standard replacement","Service Type":"Display LCD & Keyboard Panel Replacement","Certification":"ISO 9001:2015","Turnaround Time":"3-7 Working Days","Supply Ability":"300 Units per Month","Keyboard Types":"Alphanumeric Membrane, Tactile Switch Panel, Touch Panel","Repair Warranty":"12 Months","Place of Origin":"Guangdong, China","Payment Terms":"T\/T, PayPal, Western Union","Packaging Details":"Anti-static ESD-safe packaging with shock-proof foam insert, export-grade carton","Display Types":"Monochrome LCD, Color TFT LCD, Touch Screen with Digitizer","Supported Brands":"Leica, Trimble, Topcon, Sokkia, Nikon, Pentax","Replacement Parts":"OEM-Grade LCD Panels, Original-Spec Digitizers, UV-Resistant Keypads"}}