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

2 Answers

Blue horizontal and vertical lines

My problem is that when I turn on my tv, I can see multiple blue horizontal and vertical lines across my lcd screen. This happens regardless of the input used and still happens when no input is connected. At first the tv was fine. Then, from time to time I would get these blue lines but I could solve the problem with a tv shut down. Now, only the blue lines. I can still watch tv as the picture and color aren't affected, I just get blue lines on top of them...
Any advice?

Posted by on

  • davidasabin Dec 27, 2008

    I have a blue lie on the bottom left part of the LCD screen. This is an LG 50" that is 4.5 years old.

  • piperjojo1
    piperjojo1 Jul 16, 2013

    what are you talking about? I know nothing about electronics? Plainspeak please?

×

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 346 Answers

Poor convergence

Posted on Nov 12, 2008

Ad

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 208 Answers

We have many problems with loose or poorly seated cables and connectors on these units. Pull the back and reseat all the internal cables, especially the LVDS cable to the LCD control bd. If this does not correct the problem the main cause is a bad LCD control bd. or possible a defective main bd.

Posted on Feb 03, 2008

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

SONY LED TV Vertical & Horizontal Lines on the Screen


If you wish to get some details; check 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

Sep 30, 2016 | Sony Televison & Video

1 Answer

My 42 in phillips LCD flat seen has a black horizontal line toward the bottom how can I fix this.


Samsung LN46B650 Thin Black Horizontal Lines - Forums - CNET

www.cnet.com > Forums > Samsung

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 ...

Faulty HD- LCD - LED TV - Horizontal Lines STRIPS on the ...

? 3:05
https://www.youtube.com/watch?v=KiqJuMiEiak
Jun 8, 2013 - Uploaded by Sameh Moustafa
Faulty HD- LCD - LED TV - Horizontal Lines STRIPS on the picture SOLVED .... I just have one black line ...

TV Repair Help for Vertical & Horizontal Lines on Your TV ...

? 2:47
https://www.youtube.com/watch?v=b0sI7LB4cZE

Dec 20, 2015 | Televison & Video

1 Answer

Hi I have a 55 inch LCD TV that while I was watching TV it went completely black when I turned it off and the on again there were rainbow vertical lines moving across the screen then at some points there...


My first thought would be to check your TV on multiple inputs to verify that it IS the TV and NOT isolated to your input cable(s). If you can get a solid blue color to come up on the screen by changing inputs then it would really narrow down the issue(s).
Hope this helps.

Jan 04, 2018 | Insignia NSLTDVD26 LCD TV

1 Answer

Horizontal Band of Thin Red and Blue Lines on Screen


Sound like your Y-Sustain board has one foot in the grave. The Y upper buffer and Y lower buffer boards go when the Y Sus Goes too...

Mar 22, 2014 | Panasonic TCP46C2 46 in Plasma TV

1 Answer

Advent TS2766A tv has no picture and a horizontal blue line across the screen


Hello
Only one line across the screen is due to total vertical sweep failure. In all CRT tvs have both vertical and horizontal sweeps to spread the picture to the entire screen. If vertical sweep failure occurs, you will see a horizontal line across the screen, and if horizontal sweep failure happens, you will see a vertical line in the middle of the screen or no lines or a dead tv.
In your TV, now the sound will be ok, I thinks so, and posts this solution.

You just open your tv, and locate the vertical output section in the circuit board. It is very easy to findout. Just see the four wires goes from the deflection yoke [the coil fitted at the neck of the picture tube], there will be four of them, out of which two of them will be thick, usually red and blue coloured, and another two of them will be thin. You just follow the two thin wires, which in turn goes to a plug in adaptor and to the circuit board. Just put the circuit board upside down and follow the two tracks undeneath, which will guide you to the vertical output section.
There you can see an IC screwed onto a metal heatsink. That is the vertical output IC. Just check keenly for any loose solderings on the legs of that Ic. It may happen because, this Ic will heat up when the set works. Prolonged times of heating and cooling may make loose solderings or bad solderings. It is very difficult to locate the exact loose point because some of them may have micro type loose contacts, that can't be detected with naked eye.
You just resolder all the legs of that Ic, by applying a little more solder, without shor circuiting the terminals. Chek whether you have rectified the problem or not. If not check the main supply point leg voltage. If there is no voltage follow the track and find out the fault. If there is voltage, check the voltage at the output pin of that Ic. It must be somewhat half to that of its supply voltage. If main voltage is there, and there is no voltage on the output pin, or that voltage is equal to that of supply voltage, the vertical output IC is defective. Resolder it out from the board and go for a same type and number. Replacing it will solve your problem. There is an other rare chance to get the vertical windings in the deflection yoke to open. Bu it isvery rare, out of 1/1000 of it may happen. It can be checked by continuity measuring of that coins winding ends.
You just go with confidence. Take every precautions we take before working with an electrical equipment. Proceed. You can and you will. Take care. OK.

Nov 18, 2010 | Recoton Advent Advent TS2066A TV

2 Answers

Sony KF50WE610 Vertical Blue Lines Across Screen


the vertical blue lines indicate some interference from other electronic gadgets near your tv. it started showing up on my sony grand wega when i installed my wireless modem. i almost ordered a new rear projection lamp costing over $100 but decided to experiment. i first moved my desk computer farther away from the tv then isolated the wireless modem router by placing it inside a small glass - the vertical blue lines became lighter in color so i dedided to find another small glass that fit inside the first glass container then put the router in the double glass - no more blue lines and my wireless modem router still works.
do some deductive thinking to figure out what's messing up your tv and isolate the interference.
good luck!

Jan 18, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

2 Answers

TV has a thin horizontal line across the screen


intermintence in vertical IC deflection its a job for experienced tech need to look for that circuit and do fine job resolding that IC

Apr 01, 2008 | Sanyo DS31590 31" TV

1 Answer

Black line running horizontally across TV screen


A line on an LCD, either horizontal or vertical usually means the video driver board is defective or the screen is defective, does it show up as black even on a dark screen? That means a line of LCD "shutter"s is not working and there is a problem that cant be fixed by a reboot or channel change. Bummer.

Feb 17, 2008 | Televison & Video

2 Answers

Horizontal line across the middle of the screen


replace the vertical ic,when your vertical ic is defective you can see the horizontal line across your screen

Oct 19, 2007 | Gateway FPD2275W LCD Monitor

Not finding what you are looking for?
Sharp Aquos LC-42D62U 42 in. LCD HDTV Logo

3,021 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sharp Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76171 Answers

Cindy Wells

Level 3 Expert

6046 Answers

Ekse

Level 3 Expert

13434 Answers

Are you a Sharp Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...