Samsung LC24A650XS/XK, LC24A650XSR/EN manual Check the followings, Installation issue PC mode

9Troubleshooting Guide

9.1.3 Check the followings.

Installation issue (PC mode)

The screen keeps switching on and off.	Check the cable connection between the product
	and PC, and ensure the connection is secure.
	(Refer to "3.2 Connecting and Using a PC")
Blank spaces are found on all four sides of the	The blank spaces found on the screen have
screen when an HDMI or HDMI-DVI cable is	nothing to do with the monitor.
connected to the monitor and PC.	Blank spaces on the screen are caused by the PC
	or graphics card. To resolve the problem, adjust
	the screen size in the HDMI or DVI settings for the
	graphics card. If the graphics card settings menu
	does not have an option to adjust the screen size,
	update the graphics card driver to the latest
	version.
	(Please contact the graphics card or computer
	manufacturer for further details about how to
	adjust the screen settings.)
Screen issue
The power LED is off. The screen will not switch	Check that the power cable is connected
on.	correctly (Refer to "3.2 Connecting and Using a
	PC")
The message Check Signal Cable appears.	Check that the cable is properly connected to the
	product. (Refer to "3.2 Connecting and Using a
	PC")
	Check that the device connected to the product is
	powered on.
"Not Optimum Mode" is displayed.	This message appears if the signal from the
	graphics card exceeds the maximum resolution or
	frequency for the product.
	Change the maximum resolution and frequency to
	suit the product performance, referring to
	Standard Signal Mode Table (107page).
The images on the screen look distorted.	Check the cable connection to the product (Refer
	to "3.2 Connecting and Using a PC")
The screen is not clear. The screen is blurry.	Adjust Coarse(64page) and Fine(65page).
	Remove any accessories (video extension cable,
	etc) and try again.
	Set the resolution and frequency to the
	recommended level. (Refer to "10.1 General")

9 Troubleshooting Guide 101