Samsung Television UNES7550 User Manual

Picture (Troubleshooting)First, perform the Picture Test and to 
see if your TV is properly displaying 
the test image (go to  Support 
→ Self 
Diagnosis  → Picture Test).
If the test image is properly displayed, 
the poor picture may be caused by the 
source or signal.
The TV image does not look as good as it 
did in the store. Store displays are all tuned to digital,  

HD (high definition) channels.
If you have an analog cable/set top 
box, upgrade to a digital set top box. 
Use HDMI or Component cables to 
deliver HD (high definition) picture 
quality.
 
NMany HD channels are up scaled 
from SD (Standard Definition) 
contents. Look for a channel that is 
broadcasting true HD content.
 
ΠCable/Satellite subscribers: Try HD  

channels from the channel line up.
 
ΠAir/Cable Antenna connection: Try 
HD channels after performing an 
Auto Program.
Adjust the Cable/Sat box video output 
resolution to 1080i or 720p.
The picture is distorted: macro block error, 
small block, dots, pixelization The compression of video contents 
may cause picture distortion especially 
in fast moving pictures such as sports  

and action movies.
A weak or bad quality signal can cause 
picture distortion. This is not a TV 
issue.
Mobile phones used close to the TV 
(within 3.3 ft) may cause noise in the 
picture on analog and digital channels.
Color 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 color problems or a blank 
screen.
The color is poor or the picture is not bright 
enough. Adjust the Picture options in the TV 
menu (go to  Picture Mode /  Color / 
Brightness /  Sharpness)
Adjust the Energy Saving option in the 
TV menu (go to System  → 
Eco Solution  
→  Energy Saving) 

Try resetting the picture to view the 
default picture settings (go to Picture 
→  Reset Picture).
There is a dotted line on the edge of the 
screen. If the Picture Size is set to Screen Fit, 
change it to  16:9.
Change the cable/satellite box 
resolution.
The picture is black and white. If you are using an AV composite input,  

connect the video cable (yellow) to the 
Green jack of Component on the TV.
When changing channels, the picture 
freezes or is distorted or delayed. If the TV is connected to a cable box, 
try to reset the box. (Disconnect and 
then reconnect the AC cord and wait 
until the cable box reboots. It may take 
up to 20 minutes.)
Set the output resolution of the cable 
box to 1080i or 720p. 

Sound (Troubleshooting)
First, perform the Sound Test to 
determine if your TV audio is operating 
properly. (Go to  Support 
→ Self 
Diagnosis  → Sound Test).
If the audio is OK, the sound problem 
may be caused by the source or signal.
There is no sound or the sound is too low 
at maximum volume. Please check the volume of the device 
(Cable/Sat Box, DVD, Blu-ray etc.)  

connected to your TV.
The picture is good but there is no sound. Set the Speaker Select option to  TV 
Speaker in the Sound  menu.
If you are using an external device, 
check the device’s audio output option. 
(Ex. You may need to change your 
cable box’s audio option to HDMI if 
you have the box connected to your TV 
using an HDMI cable.)
If you are using a DVI to HDMI cable, a  

separate audio cable is required.
If your TV has a headphone jack, make 
sure there is nothing plugged into it.
Reboot the connected device by 
disconnecting, and then reconnecting 
device’s power cable.
The speakers are making an inappropriate 
noise. Check cable connections. Make sure 
a video cable is not connected to an 
audio input.