Samsung Television UNES7150 User Manual

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 caused by the source or signal.
There is no sound or the sound is too low 
at maximum volume. Check the volume setting 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.
If the TV is connected to an external 
device, reboot the connected device by 
disconnecting, and then reconnecting 
the 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.
For antenna or cable connections, check 
the signal information. A low signal 
level may cause sound distortion.
Perform a Sound Test. ( Support 
→ Self 
Diagnosis  → Sound Test) 

Antenna (Air / Cable) Connection (Troubleshooting)
The TV is not receiving all channels.
Make sure the coaxial cable is 
connected securely.
Run  Auto Program to add available 
channels to the channel list. Go to 
Channel  → Auto Program then select 
Cable and make sure to select the 
correct Cable TV signal type. There are 
3 options, STD, HRC and  IRC. Most 
cable systems use STD. If you are  

using an antenna, select Antenna or Air  
instead.
Verify the antenna is positioned 
correctly.
No caption on digital channels. Check the Caption Setup menu. Try 
changing  Caption Mode Service1 to 
CC1 .
Some channels may not have caption 
data.
The picture is distorted: macro block error,  

small block, dots, pixelization.The compression of video contents 
may cause picture distortion, especially 
with fast moving pictures such as those 
in sports and action movies.
A weak signal can cause picture 
distortion. This is not a TV problem. 

PC Connection (Troubleshooting)
A Mode Not Supported message appears.Set your PC’s output resolution so it 
matches a resolution supported by the 
T V.
The video is OK but there is no audio. If you are using an HDMI connection, 
check the audio output setting on your 
PC. 

Network Connection (Troubleshooting)
The wireless network connection failed.Make sure the TV is connected to a 
wireless IP router or modem.
Software Update over the network fails. Run  Network Status in the Network  
menu to confirm the connection.
If you already have the latest Software 
(SW) version, SW upgrade will stop. 

Others (Troubleshooting)
Purple/green rolling horizontal bars and 
buzzing noise from the TV speakers with a 
Component cable connection.Remove the left and right audio 
connections from the Set-Top box. If 
the buzzing stops, this indicates that 
the Set-Top box has a grounding issue. 
Replace the Component video cables 
with an HDMI connection.
The picture won’t display in full screen.