Tro ubleshooting – SoundMax SM-LCD712 User Manual
Page 9

9
Occurrences
Possible reasons
No picture and
sound
AC adapter or automobile adapter is not properly
connected. Uncertified power is being used.
Power switch is off. TV/AV is not properly chosen.
No picture
Check to see if the channels are selected
correctly. Readjust automatic channel tuning.
No sound
Check to see if the audio volume is off or audio
system is improperly set and the earphone is
inserted. Poor signal or the sound elimination
function is on. Audio system is not properly
chosen.
Poor reception
Antenna is correctly adjusted and that the channel
is tuned correctly.
Dark picture
Check that the brightness and contrast are set
correctly. Also that the environmental is too low
Vague picture or
unstable picture
Check that the antenna is correctly adjusted.
Snowflake interference is possibly affected electric
wave interference from vehicle motors, trains,
high-voltage power wired or neon lights.
No color
Check that the color and the color system are
adjusted correctly.
Remote control
doesn’t work
Check to see that whether batteries are
exhausted and strong sunshine’s on the receiver.