Elo TouchSystems Elo Entuitive 1749L Series User Manual page 28

Image has vertical flickering line bars.
Image is unstable and flickering
Image is scrolling
Touch doesn't work
4-24 E l o E n t u i t i v e T o u c h m o n i t o r U s e r G u i d e
Use "Phase" to make an adjustment.
Check and reconfigure the display mode of the vertical
refresh rate of your graphic card to make it compatible with
the LCD display.
Use "CLOCK" to make an adjustment.
Make sure the VGA signal cable (or adapter) is well
connected.
Check and reconfigure the display mode of the vertical
refresh rate of your graphic card to make it compatible with
the LCD display.
Make sure cable is securely attached at both ends.