koyo Koyo touch screen repair: solve koyo Koyo touchscreen Troubleshooting: black, video, white screen, the touch screen unresponsive or slow to respond (touch bad), content deranged, can not enter the system interface, no backlight, backlight dark, backlit no character can not communicate, buttons no response; koyo Koyo Touchscreen common models: E7-S6M-RC, E7-S6C-RC, E7-S6M-C, E7-S6C-C, E7-T6C-C, EA7-T8C-C, EA7-T10C-C, EA7-T12C-C and other maintenance process: The first step: ask the user equipment failure; the second step: the user's failure to describe, analyze the reasons causing this failure; the third step: Open in need of repair equipment, make sure the device is damaged, analyze the feasibility of recovery of maintenance; Step Four: According to the working position the device is damaged, view and analyze the circuit works, to find out the cause of damage to the device; the fifth step: contact with customers, Maintenance on the reported price, solicit customer maintenance advice; Part VI: Looking for the original model device to be replaced; Part VII: confirmed case of equipment failure are excluded, the power to be tested. Maintenance Features: enterprise maintenance operation, to provide ongoing support services, free checking, lines confirm the maintenance price, the customer acceptance and then for maintenance, fast, excellent price