Polaroid FLM 3701 - 37" LCD TV Service Manual page 9

Fringe in picture
Picture is interfered by stripe
shaped bright spots
There appear streaks or light color
on the screen
2.TV set:
Symptoms
Unable to switch the power on
No picture and sound
Deterioration of color phase or color
tone
Screen position or size is not proper
Picture is twisted and deformed
Picture color changed or colorless
Picture too bright and there is
distortion in the brightest area
Picture is whitish or too bright in the
Check if the antenna is correctly oriented.
Maybe there is electric wave reflected from hilltop or
building.
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.
Check if interfered by other equipment and if interfered
possibly by the equipment like transmitting antenna, non
professional radio station and cellular phone.
Possible cause
Check to see if the power plug has been inserted
properly into the socket.
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.
Check if all the picture setups have been corrected.
Check is the screen position and size is correctly set
up.
Check to see if the picture-frame ratio is properly set
up.
Check the "Component" or "RGB" settings of the
liquid crystal TV set and make proper adjustment
according to the signal types.
Check if the contrast setting is too high.
Possibly the output quality of DVD broadcaster is set
too high.
It maybe also due to improper terminal connection of
the video frequency signal in a certain position of the
system.
Check if the setting for the brightness is too high
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