6
1.Antenna (signal):
Picture is out of focus or jumping
Bad status in signal receiving
Poor signal
Check if there are failures with the electrical connector or
the antenna.
Check if the antenna is properly connected.
Fringe in picture
Check if the antenna is correctly oriented.
Maybe there is electric wave reflected from hilltop or
building.
Picture is interfered by stripe
shaped bright spots
Possibly due to interference from automobile, train, high
voltage transmission line, neon lamp etc.
Maybe there is interference between antenna and power
supply line. Please try to separate them in a longer
distance.
Maybe the shielded-layer of signal wire is not connected
properly to the connector.
There appear streaks or light color
on the screen
Check if interfered by other equipment and if interfered
possibly by the equipment like transmitting antenna,
non-professional radio station and cellular phone.
2.TV set:
Symptoms Possible
cause
Unable to switch the power on
Check to see if the power plug has been inserted
properly into the socket.
No picture and sound
Check to see if the power supply of liquid crystal TV
has been switched on. (As can be indicated by the
red LED at the front of the TV set)
See if it’s receiving the signal that is transmitted from
other source than the station
Check if it’s connected to the wrong terminal or if the
input mode is correct.
Check if the signal cable connection between video
frequency source and the liquid crystal TV set is
correct.
Deterioration of color phase or color
tone
Check if all the picture setups have been corrected.
Screen position or size is not proper
Check is the screen position and size is correctly set
up.
Picture is twisted and deformed
Check to see if the picture-frame ratio is properly set
up.
Picture color changed or colorless
Check the “Component” or “RGB” settings of the
liquid crystal TV set and make proper adjustment
according to the signal types.
Picture too bright and there is
Check if the contrast setting is too high.
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