Out of the blue a wavy black line has appeared to the left side of my monitor screen. It appears at the top and bottom but does not connect. It looks like a worm. I thought maybe it was some kind of worm and did my normal scanning and it is still here. Nothing was found in my AVG virus scan. I have restarted my computer several times but the line is still here. HELP!
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It sounds that the main power supply section to your TV has the fault. The horizontal thik lines that appears crawling down across the screen should be of video 'HUM'. Have you replaced the main filter capacitor at the power supply section? If not, replace it along with the main rectifier. The AC power is rectifed by a bridge and applied ot this main filter capcitor. It will have a capacitance value between 120 to 350MFD 450VDC. Check this section. Measure the rectifed DC voltage acorss this main filter capacitor. It should be around 350VDC, if your home power supply line is 220VAC. If it is 110AC, this DC voltage will be around 165VDC; and it should be. If rectified DC voltage found lower than the input AC voltage, replace the rectifier bridge. In some sets, this bridge section have four diodes. Some other circuits, a bridge rectifier stalk may be used.
The following are supposed to be checked on the horizontal and vertical,
the supply of the sawtooth oscillator
eletrolitic capacitors near a line transformer
and driver transistor a round that area.
Try moving a medium powered magnet (not one for picking up heavy objects and not a refrigerator holding one) over the distorted area. If that doesn't work, try a more powerful one. This worked for my Toshiba LCD. Good luck!
this a convergence problem and the convergence IC's will need replacing along with some testing of resistors and or replacement
to have a technician come out to do this repair will cost about $300 - $350 to get this fixed
Both sound like bad LCD panels. The following must be answered to confirm this: Do the lines appear on all inputs/all signal sources? Can they be seen in the OSD/menu? If yes to both questions, it is likely that the LCD panel is bad
some type of electrical feedback try upgrading your cables or tightening the ones you have. what might work best is a line conditioner i filters out any feedback you may be getting and cleans your power supply they cost from 50.00 and up best buy or circiut city both carry them or online as well