Picture is interfered by stripe shaped bright spots
There appear streaks or light color on the screen
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.
2.TV set:
Symptoms Unable to switch the power on No picture and sound 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 6
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
