Samsung UN40D5550RF E-Manual page 282

Issues
Your settings are lost after 30
minutes or every time the TV is
turned off.
You have intermittent loss of
audio or video.
▶
You see small particles when
you look closely at the edge of
the frame of the TV.
Solutions and Explanations
•
If the TV is in the Store Demo
settings every 30 minutes. Change the settings from
mode to mode using the
Home Use
button to select
SOURCE
→ ENTERE.
Plug & Play
•
Check the cable connections and reconnect them.
•
Loss of audio or video can be caused by using overly rigid or thick
cables. Make sure the cables are flexible enough for long term use. If
mounting the TV to a wall, we recommend using cables with 90 degree
connectors.
•
This is part of the product's design and is not a defect.
English
mode, it will reset audio and picture
procedure. Press the
Plug & Play
mode, and go to
TV MENU
Store Demo
→ →
System
▶