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No Data When Touched
  • Make sure the touchmonitor is connected to the right COM port.
    • A standard, straight-through serial cable is used, with no gender-changing adapters
    • DB9 male on one end, DB9 female on the other
    • If any gender-changers are required, then the monitor does not have a serial controller installed.
    • If no data on touch and the Hshk item indicates None, then either the touchscreen controller is not getting power or it is not connected to the right COM port.
  • Unplug the monitor's power cord for a few seconds to reset  the controller, then try comdump again
  • Try restarting comdump, specifying the other COM port (you might have specified the wrong one).
  • If you have a serial mouse (one that can be connected to a 9 pin COM port), disconnect the touch cable from the COM port and connect the mouse in its place, then move the mouse; data should scroll when the mouse is moved.
    • If data scrolls when moving the mouse, then the COM port is functioning; if not, the COM port has a problem (or you have selected the wrong COM port).
    • If a serial mouse produces data, try connecting the mouse to the COM port through the touchscreen cable.
      • If data now does not scroll when the mouse is moved, the touchscreen cable has a problem.
      • If data still does scroll when the mouse is moved, the touchscreen or controller has a problem.
  • If you have no serial mouse (or no other means of generating serial data), but you have been through all the steps here (including trying more than one COM port) and the touch function still does not work, it is reasonable to assume that the touchmonitor is in need of repair.