Samsung LT24D391EX/RU manual Mode Not Supported, Brightness / Sharpness, Solution → Energy Saving

Other Information

Issues	Solutions and Explanations
PC Connection
A Mode Not Supported	Set your PC’s output resolution so it matches a resolution supported by the product.
message appears.
“PC” is always shown on the	This is normal. “PC” is always shown in the source list, regardless of whether a PC is
source list, even if a PC is not	connected.
connected.
The video is OK but there is	If you are using an HDMI connection, check the audio output setting on your PC.
no audio.
Picture	First, perform the Picture Test and to see if your product is properly displaying the test
	image (go to Menu → Support → Self Diagnosis → Picture Test).
	If the test image is properly displayed, the poor picture may be caused by the source
	or signal.
The product image does not	Store displays are all tuned to digital, HD (high definition) channels.
look as good as it did in the	If you have an analogue cable/set top box, upgrade to a digital set top box. Use HDMI
store.
	or Component cables to deliver HD (high definition) picture quality.
	✎✎
	Many HD channels are up scaled from SD (Standard Definition) contents. Look
	for a channel that is broadcasting true HD content.
	ŒŒ	Cable/Satellite subscribers: Try HD channels from the channel line up.
	ŒŒ	Air/Cable Aerial connection: Try HD channels after performing an Auto Tuning.
	Adjust the Cable/Sat box video output resolution to 1080i or 720p.
The picture is distorted: macro	The compression of video contents may cause picture distortion especially in fast
block error, small block, dots,	moving pictures such as sports and action movies.
pixelization	A weak or bad quality signal can cause picture distortion. This is not a product issue.
	Mobile phones used close to the product (within 3.3 ft) may cause noise in the picture
	on analogue and digital channels.
Colour is wrong or missing.	If you’re using a Component connection, make sure the component cables are
	connected to the correct jacks. Incorrect or loose connections may cause colour
	problems or a blank screen.
The colour is poor or the	Adjust the Picture options in the product menu (go to Picture Mode / Colour /
picture is not bright enough.	Brightness / Sharpness)
	Adjust the Energy Saving option in the product menu (go to Menu → System → Eco
	Solution → Energy Saving)
	Try resetting the picture to view the default picture settings (go to Menu → Picture →
	Reset Picture).

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