LG 50PM4700 User Manual page 159

Problem
Vibrating horizontal/vertical
lines and fishnet patterns
appear momentarily.
The screen display freezes
or does not work properly in
digital broadcast.
Digital broadcast is not on
even though the cable is
connected.
• Such a problem may happen when there is strong
electronic interference. Turn off other electronic devices
such as mobile phones, power tools and other small
electrical appliances.
• It may happen when the signals are weak or the
reception unstable. Adjust the antenna's orientation or
cable connections.
• If the signal strength or quality is low on
call the TV station or administration office for checkup.
• Check with cable operator regarding the subscription
and/or signal. (Depending on the subscription, digital
broadcasting may not be supported.)
Solution
Manual Tuning,