LG DM2350D Owner's Manual page 110

ꕢ Vibrating horizontal/vertical lines and fishnet patterns appear momentarily.
• 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.
ꕢ The screen display freezes or does not work properly during digital
broadcast.
• It may happen when the signals are weak or the reception is unstable. Adjust the
antenna's orientation or cable connections.
• If the signal strength or quality is low on
administration office for checkup.
Manual Tuning, contact the TV station or