19
ENG
Simple troubleshooting
Symptom Cause Solution
Snowflake speckle and
sound noise�
1� Antenna cable connector is loose,
cable is damaged�
2� Antenna cable type does not match�
3� Direction or position of antenna is
incorrect�
4� Signal is weak�
1� Check if the antenna cable connector plug is
loose and if the cable is perfect�
2� Check antenna cable type (VHF/UHF)
3� Adjust direction or position of antenna�
4� Attempt to use signal amplifier�
TV image is better, but
has noise�
Antenna cable connector is loose,
cable is damaged�
Check if the antenna cable connector plug is
loose and check cable condition�
No image� No sound�
Power plug is loose, or power supply is
not connected�
Check if the power cord is well connected�
TV image has stripes�
Signal is exposed to interference, such
as car, neon light, electric blower etc�
Do not use electric blower around the device
and adjust antenna cable direction to reduce
interference�
TV image has shadows�
1� TV signal is reflected against a valley
or building�
2� Direction of antenna is incorrect�
1� Use high directional antenna�
2� Adjust direction of antenna�
TV has no sound�
1� Volume setting is too low�
2� Sound is muted�
1� Adjust volume to proper value�
2� Press “MUTE” key on remote control to
eliminate mute�
Computer does not
display anything and it
does not prompt any
signal input, red indicator
LED twinkling�
Signal cable is loose or disconnected�
Check if the signal cable is loose or
disconnected, and reconnect it�
Remote control distance
is short; it loses control�
1� Receive window of remote control is
covered by objects�
2� The battery energy of remote control
is too low�
1� Remove objects obstructing the receiver
window of remote control�
2� Change batteries�
Computer display is
faint�
1� Adjustment is incorrect�
2� Display mode is incorrect�
1� Use auto-adjustment function�
2� Use recommended mode�
Computer display image
does not fill the screen�
1� Adjustment is incorrect�
2� Display mode is incorrect�
1� Use Auto-adjustment function�
2� Enter “PICTURE” to adjust horizontal or
vertical position�
3� Use recommended mode�
Noise Signals while
turning off�
Electrical discharge while turning off� It is normal�
Cannot operate this
device�
Exterior influence, for example
lightning, static electricity and so on,
which can potentially interfere with
normal operation of this device�
First disconnect the power supply and reconnect
it after about 1-2 minutes, then turn on the TV
again�