Samsung 900NF, 959NF Shaking, Screen shows strange, Colors or just black, White, Or OSD cannot be

User’s Manual 49

Troubleshooting

Check List

Symptom	Check List	Solutions
The image on the screen is	Check the monitor configuration to	The signal from the video card
shaking.	see if it is in Interlace Mode.	exceeds the maximum resolution
	(Interlace Mode: Vertical frequency	and frequency of the monitor.
	43Hz, 87Hz(i), etc)
	Are there any magnetic products	Move the monitor away from
	such as a power adapter, speaker	anything that can create a strong
	or a high voltage wire near by?	magnetic field.
	Is the voltage stable?	The screen image can appear to
		shake or vibrate at a particular time
		of day due to low supply voltage.
	The screen image can also appear to shake or vibrate if there is a
	problem with the video card or the computer's main board.
The screen shows strange	Is the screen displaying only one	Check the signal cable connection.
colors or just black and	color as if looking at the screen	Make sure the video card is fully
white.	through a cellophane paper?
		inserted in it's slot.
	Have the screen colors become	Reboot the computer.
	strange after running a program or
	due to a crash between
	applications?
	Has the video card been set	Set the video card by referring to
	properly?	the video card manual.
The screen suddenly has	Have you changed the video card	Adjust screen image position and
become unbalanced.	or the driver?	size using the OSD.
	Have you adjusted the resolution	Adjust the resolution and frequency
	or frequency to the monitor?	at the video card.
		(Refer to the Preset Display
		Modes).
	The screen can be unbalanced due to the cycle of the video card signals.
	Readjust Position by referring to the OSD.
The screen is out of focus	Have you adjusted the resolution	Adjust the resolution and frequency
or OSD cannot be	or frequency on the monitor?	of the video card.
adjusted.		(Refer to the Preset Display
		Modes).