My JVC TV recently began getting a batch of thin white/clear horizontal lines at the top 1/5 of the screen. The bottom-most line is more solid white and its length varies by constantly moving (a busy side-to-side blinking...). Months ago, I noticed a slight rainbow-colored patch in the top left corner of the screen. Eventually, it went away. When this batch of lines appeared, it would only be when I first turned the TV on. After a few minutes the line would disappear. I made sure I moved everything that could produce electrical static interference away from the TV. No improvement... It's always been plugged into a surge protector. I paid $219 for it apprx.8 years ago. Not looking to pay almost triple for a new LCD/HD/Flatscreen TV. However equally not sure if I can learn how to open it up and do surgery. Don't most repair shops charge 200 deposit anyway? What does it normally cost to fix my problem?
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CNETI'm experiencing thin black lines from the top of the screen to the bottom. ... by babes808gpa / January 15, 2010 1:42 AM PST ... lines are about 1/4 inch apart from top to bottom of screen. starts on the right and about a 1/3 of the way toward the ...have the exact same problem, my lcd tv has multiple lines are horizontal it ...
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Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
This is probably bad/leaky capacitors in the vertical circuit, around the vertical IC, or the power supply that feeds the vertical. Sometimes you can see domed/ bulged caps or what looks like liquid on the circuit board around the leaky ones. The legs on some caps can even corrode to the point the leg is missing. Care must be taken when replacing them because the acid from the caps can eat away foil traces on the circuit board. All acid must be cleaned off board to prevent further corrosion of parts
If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ 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
now only visible in a thin horizontal line.
first of all you reduce brightness to monimum.
it just to protect your tv from crt demage.
your problem is in horizontal output section as you have mentioned that week or so ago the right and left bottom edges of the picture began to move in like a sideways triangle filled with black so this sympton is due to hor. section problem.
your flyback transformer or horizontal output might be defective.
but remember check for power supply is ok from
hope this will help.
1.Are these lines only in the upper 1/3 rd portion of the screen?And is there a clear demarcation between this area and the lower portionb, where the image is perfect?
2.Or is thin Horizontal lines evenly spaced around an centimetre apart?
If it is the first case, then there si a problem with your TVs SMPS. It is not generating the required regulated 110V required for the TVs functioning.
If it is case 2, then there is a simple adjustment at the back - 'SCREEN'. This adjusts the Screen Grid Voltage, and by slightly lowering it, this problem will go away.