Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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Black horizontal line, red parallel vertical lines

There is a black horizontal line running through the middle of the screen and 2 red parallel lines running vertically off to the right a little.

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REPLACED LCD PANEL
Manufacturer Sharp Part Number RF-R1LK420D3LF2 Description 42" WIDE LCD PNL -

Posted on Sep 28, 2009

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Sounds like you pulled the TV apart, good luck. Hope you earthed yourself. You could try a replacement t-con board. if that was the problem. http://electronicshelponline.blogspot.com.au/2012/06/how-to-replace-faulty-tcon-board.html

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When watching movies on my computer, I am getting a weird line through the middle of the screen at times, also, when things are moving on screen faster, more lines seem to show. I guess they don't really...


i think your vertical IC ( if vertical lines are shown) / horizontal IC ( if horizontal lines are shown) of your monitor has damaged. you may contact a mechanic and change the corresponding IC

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The blob is a phisically damaged part of the LCD screen. Unfixable, the screen must be replaced and it will be expensive.

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Change 100uf 50-63volts capacitor next to the vertical output ic,if not solved check the vertical b+ filter on the 24volt line.If nothing else work try damping the vertical yoke with 2 300ohms resistors if in series or just one 220-330 ohm resistor if its parallel vertical yoke windings.

Nov 22, 2009 | Sharp 32J-S400 32" TV

1 Answer

Line across middle of screen, rest of screen black


The problelm is a defective vertical deflection system. Could be the amplifier, vertical output driver or whole printed board that supports the vertical deflection activity. It is considered to be a serious failure.
The cost of repair will be around $200 to $300.

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Toshiba 36A50 sound, light line horizonally on black screen


It is my guess that you have some intermitent solder connections in the Vertical output circuit.
Hope this helps,
Skyassoc

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1 Answer

6 horizontal lines


I would look for a Vertical circuit failure. Most likely is the vertical output IC and or open resistor off the hv transformer. Definitely look for any loose solder connections around the Vertical output IC.
Hope this helps,
Skyassoc

Jun 16, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Jvc av-29ts2ek


It sounds like a vertical deflection problem. You mentioned you had a white HORIZONTAL LINE in the middle of the screen. If this line runs from left to right across the screen it's in Verticla deflection. If it runs from top to bottom, it's in Horizontal deflection. I am assuming the problem is a Vertical deflaecion problem. The repairs necessary are most likley to replace the vertical capacitors or the verticla deflection chip.
Good Luck
Ed
NC Electronic Mills, Wyo USA

Jan 05, 2008 | JVC TM-2703SU 27" TV

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