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Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts....
SOURCE: sansui picture fault
Usualy a problem with the LCD screen itself, that takes replacing the whole screen to fix. Sorry. Could also be an internal connector that has gone bad. There are tiny transistors on most displays that control whole rows and columns. It sounds like one went bad, causing a dead, or constant on, column. Unless you are REALLY handy, it will probably need to go to a service center for repair, which could be very expensive. Try flexing your screen - wrap a non-fibrous cloth around your hand and squeeze the screen lightly all around the edge. If you find a point where squeezing the screen makes things better or worse, explore that point further. Squeeze just hard enough to make a white area go light grey or yellow. It's safe to squeeze gently with something fluffy when the computer is turned-on. Could be a cable problem - either the cable is not making a good connection at one end, or the cable itself may have been crushed and one of the lines in it broken. Replacing the cable is far cheaper than replacing the display. Good luck
SOURCE: very fine red lines across srceen
The initial reply is correct, you need to try the convergence / retrace lines Basically you need to open the TV and the job is about 15 minutes to solve the issue with arched lines, either blue, greed, or red. There is a great how-to guide here with step-by-step pictures here: http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
SOURCE: Horizontal white lines across top of TV screen
Vertical hold circuit is failing.
Check capicitor in vertical hold circuit. You should have solid knowledge of electronics repair before attemping repair. TV's can emmit harmful radiation, and produce voltages up to or in excess of 30kV.
SOURCE: horizontal blue lines with a slight blue wash in the screen
Hi,
Its because of Over Voltage of Screen (G2) to Blue CRT.
Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines.
If you select AV input to adjust that will be fine as you do not need to wait for dark-scene.
SOURCE: 29"Colour TV ,Sound Normal ,No Picture a vertical line Appears
Fault in HZ Deflection Stage check yoke also
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