Samsung WM55H User Manual page 43

Touch function issues
The touch function does not work.
The icons can be touched but the drawings cannot.
Drawing and eraser do not work when PIP connection is
used.
Touching does not work when HDMI connection is used.
I use two pens, but they do not work well.
Touches break, reaction speed gets slow, and so on.
Make sure the screen or your finger is not wet.
Make sure you are not wearing a glove and your finger is not dirty.
Use the supplied product-specific pen as much as possible.
In the PIP mode, the drawing function is not supported within the PIP area. In the PIP mode,
drawings in a PC application such as Paintare made by that PC application.
Make sure that the screen is in the full screen mode (Landscape).
Check whether the TOUCH OUT port of the product is connected to the PC using a USB cable.
Make sure that there is enough space between the two pens at multi-touching.
Make sure that there areno foreign substances on the screen surface.
Check whether the screen is broken.
Make sure that the product is not exposed to direct sunlight.
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