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Faulty tv screen coloured lines and looks like a barcode

Switched tv on screen got coloured lies all over and top bit looks like a coloured barcode help.

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Check this site. It has screen-shots to faulty TVs. You can compare it to that of your TV's and can make sure about the fault. google.com/+GopakumarGopalan

Posted on Nov 21, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 3422 Answers

SOURCE: TLM 2619 MODEL-DISPLAY PROBLEM

Hi,

Hi,


The most common cause for the loss of picture is a bad Horizontal Output Transistor (HOT). but I would suggest you get a detailed estimate. I think that this would cost you about $60.

The horizontal lines means the vertical amplifier or deflection system has failed. There are over 100 components in this section and any one of them, or most of them can be at fault. However, the most common failure is the VOT or vertical output transistor (which is often buried inside a chip).

The repair will cost around $250 plus or minus.

FEW TROUBLESHOOTING STEPS YOU CAN TRY:

ONE: Do a hard reset (just to make sure there is nothing in the coding that is fowling things up). Unplug the power cord; leave it disconnected for 4 hours. That will restore everything to factory defaults when you power it back up.

TWO: Do the "whacking test" by banging your fist on a few strategic places to see if there are any cold solder joints or loose wires acting up inside the set.

If the above steps don't solve ur problem then I suggest you to go for a repair..

Goodluck..

Posted on Feb 21, 2008

  • 11 Answers

SOURCE: My samsung 32'' lcd tv LE32a456 is faulty and need

Have you looked in the owners manual for a solution? Ther may be a reset switch on the unit that will cure this.
Otherwise, contact the manufacturer

Posted on Apr 29, 2009

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Sony KDL43W800C 3D LED TV coloured vertical lines on the screen.


The panel is Faulty
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Jun 24, 2016 | Sony Televison & Video

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Toshiba satellite c55t pink lines on screen. Pls help my laptop screen colours have change. There is pink lines on screen as soon as u switch the machine on.


Faulty screen by the sound of it. Try on external monitor. If All OK on external monitor the screen is faulty.

Nov 17, 2014 | Computers & Internet

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Fading colour


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Take it to a repair shop.

Apr 07, 2014 | ViewSonic VA1703wb Monitor

1 Answer

Compaq presario cq40 lcd monitor is flickering/has colored lines appearing 1" thick at the bottom and at the top.


The first thing to check would be the cable, make sure that they are securely in place. Then maybe reseat your graphics card if your not using on board graphics. Then I would check for updated drivers via the manufacturers website.If none of these work, check the ends of the cable for bent pins, also try another known good cable to see if that is where the fault lies, if none of these work then I am afraid you may have a faulty monitor, try on another screen if you have one available.

May 05, 2011 | Computers & Internet

1 Answer

Lines on the screen


Hello
If the lines are thin and spreaded allover the screen from top to bottom, and are equally spaced around one inch of so apart, it will be a screen voltage rise problem. You just decrese both brightness, contrast and colour contols of your TV to zero position, and look into, where there is lines are visible on the screen or not. You should notice this in a drak room, so as to see is well, or close all the doors and windows to make the circumstance to a little bit dark.
If you can see these lines still, it is clear evidence of the above said fault. To rectify this fault you should open your TV. Open the back cover of the TV, and you will see a Line Output Transformer. It is otherwse known as LOT. It can be recoganiized easely as it its size. Normally it will look black in colour and a thick wire from it goes the picture tube's final anode, and look like it is stcked to it with the help of a rubber ******. Other two wires from it goes to the picture tube base board. These two wires are, one for focus and the other for screen.
There will be two controls on the lot, which can be varied, and seem to be integrated with LOT. Among, upper one is for focus adjustment, and lower one is for screen adjustment. Both will be marked as "Screen" and "Focus". You just find out the screen control. With the healp of a screw driver it can be adjusted.
Keep the TV on, Brightness, Contrast and colour to minimum, adjust this control to a little [ a very little movement should be done, otherwise the picture will be get blurred], to just eliminate the lines you see on the screen. Focus control and screen controls are interactable, that is adjusting one may effect the other. After eliminating these lines just up the brightness and contrast control to at about their mid position and press the menu button on the TV or remote control to get the menu screen. Look at the letterings, and if it seem to be out of focus only, just adjust the focus contorl to get well focused captions. The adjustments are hot, that is while the TV is operating. Take care. Ok.

Oct 26, 2010 | Mitsubishi CS-40503 TV

1 Answer

There's a picture on the screen, but it has lines all across it.Sometimes it will be clear, but most of the time it has lines. I also have directv, but they've installed a new box. Is this my television...


Hello
If the lines are there, and are across the screen at about an inch apart the whole screen from top to bottom, it is due to a slight increase in your TVs screen votage. It can be adjusted.
Open the back cover of your TV. There is an LOT [Line Output Transformer], can be seen directly soldered to the printed circuit boar of your TV. It is the largest component inside your TV, which have usually three wires emerging from it, and one thhick wire goes to the final anode of the picture tube, and will seem to be sticked to the top of the picture tube with the help of a rubber ******. Other two wires goes to the base card of the picture tube, a circuit board.
The said [LOT] has two controls integrated on it facing you as you open the TV. Among the top one is focus control, and the bottom one is screen control. Both of them are variable resistors, help to adjust focus and screen voltages respectively.
As set powered on, keeping the brightness, contrast and colour controls to its minimum, turn the screen control a little bit counterclockwise [not more, a little bit] will eleiminate the lines on your TV screen.
Take every precautions we have to, when working with an electrical equipment. Keep children away from you while you are working on it. Never allow them even to come beside you. Keep an adult beside you as a precautionary measure. Ok.
Wish you all sucess.

Oct 24, 2010 | Sanyo HT28745 28" TV

1 Answer

I have coloured vertical lines on my 40-inch Samsung Series 7 LCD tv, sound ok, what is wrong? Can it be fixed, Yasna


is the screen full of vertical lines? It sounds like your Tcon has gone faulty but...there is hope. Firstly, only if you are competent with electrics follow the procedure bleow, else get a qualified tv engineer to inspect your tv.
Remove the back cover on the tv.Looking in from behind, check the power supply which is the board connected to the mains power lead. Check the capacitors, making sure none of them have bulging tops.These are the components shown below.
2e1ea71.jpg
The caps shown below are an example of faulty caps, with their tops bulging.
3b76c83.jpg
This model of tv is prone to this condition, and if you have any bulging topped caps, replace them.
Next check the Tcon LVDS lead connection. The Tcon is the board located top centre of the screen and is enclosed in a metal plate.It has a lead connected to it that goes to the main board. Clean the connector at the Tcon.Be very careful though because the connection is fragile. It can be removed by gently squeezing in either end of the connector and gently pulling outwards.If these procedures are not successful, replace the Tcon.

Mar 07, 2010 | Samsung LE40R73BD 40 in. HD-Ready LCD...

2 Answers

Colour problems on TV


try to disgusting it and next time don't near it the magnet or speaker

Sep 25, 2009 | Televison & Video

1 Answer

Color wheel has broken and needs replacing


Hi Steve.
replacing the colour wheel is possible, you will need to strip out the light engine from the TV, and open it up to gain access to the colour wheel assembly. A replacement colour wheel is about £250 from sagem, although you can buy an equivalent wheel from the US for about £80.
Check on the avforums site in the RPTV section, there are a lot of helpful people who have replaced their colour wheels successfully. 
Cheers
Tim 

Mar 31, 2009 | Televison & Video

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