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How to adjust white lines on screen

I have lines comming from the top of the screen going down about three to four inches on older tvs theres an adj. on the newer models do they have it or is it buit in if there is an adj on the board can u tell me where it is if not ill just take it to a tv service repair store

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Re: how to adjust white lines on screen

It depends, sometimes this problem is caused by a capacitor around the crt socket or around the flyback and horizontal out.
or sometimes the signal reciever section..

Posted on Jan 27, 2008

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Lines across the screen

What is the brand name and model number to your TV? Anyway, visit the following site. I assumes that there are fine lines across the screen all around with an inch apart, with blurred picture as background. If so, the fault is called 'retrace lines'. There is a post discussing this type of fault. Check the link, and search it for this post. Pull up older posts there.

Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to the latest updates. It will make search easy. There are more than 1300 posts to different brand TVs now. Pull up older posts there.

Check this link too.

Nov 27, 2012 | Standard (CRT) Televisions

1 Answer

How to eliminate black/white lines on the screen ?

The video output section to your TV is faulty. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1100 posts to different brand TVs now. Pull up older posts there

Nov 05, 2012 | Standard (CRT) Televisions

1 Answer

When ever there is some strong white on the screen it gets distored. For example. There was a white tent on screen and where the light was hitting it it was extremely pixelated and distorted. Ny ideas?

This fault can occur to mainly three reasons. ABL circuit failure. Low screen voltage or lack of emission from picture tube cathode. Just advance the screen voltage to a little, and observe the result. Screen control can be located on its Line Output Transformer [LOT]. there will be two variable controls built on to LOT marked as screen and focus. Screen control will be at lower side, and focus will bw on the top. Just advance [clockwise movemnt] to a little, not more, advance it till retrace lines are just visible on the screen. Before doing this, set all the picture controls, contrast, colour and brightness of the TV to zero. Once the retrace lines[thin horozontal white lines across the entire screen at about 1 inch distance with each other]; are visible, stop there, turn the screen control counterclockwise to just a point when these lines are just goes off. make this adjustment in a dark room so that you can set this point very correct. After this check the perfomance of the picture. If this does not help you, ABL circuit should be checked for any fault.
If emission of the picture tube has got down, even the screen adjustment said above won't help you. The only way is to replace the picture tube with same type and number. OK.

Apr 16, 2011 | Sanyo DS24424 24" TV

1 Answer

Some channels on my tv are dark and tinted orange, I used the menu button to display the menue and scrolled down to picture but I did not know how to select picture.

Adjust colour control to zero, and check for a pure black/white picture. Adjust contrast and brightness control to minimum and check whether the picture goes completly off or a slight picture prevails. If the picture goes out when you turn down brightness control to 1/3 position, that is about 20 points, your TVs screen voltage is very low, and it can be adjustable. If the picture does not go out and more brightness prevails, screen voltage is high. If the screen voltage is high, there will be some fine lines across the screen at about an inch apart; on the whole screen from top to bottom.
Screen voltage adjustment is critical for the clarity of the picture. If it is low, no proper colour will be dispayed. If it is high, it is harmful to both picture tube and your eyes.
Never try to adjust it without proper knowledge about it. The screen control can be located alongwith the LOT [Line Output Transformer], of your tv. There will have two adjustable controls there, one is for Focus, and the other is for Screen. Both are interactive, that is adjusting one will effect an other.

Oct 18, 2010 | Emerson TS2587D 25" TV

1 Answer

Horizontal white lines 27A43.

You have some bad capacitors. They are located very near and next to your vertical IC. I would guess you would have to replace maybe four of these! Thanks for asking!

Jun 12, 2010 | Toshiba 27A43 27" TV

1 Answer

White lines at the top 3-4 inches of the screen.

well its all new now could be bad caps or vertical i.c. okay if you have a esr meter check around the i.c. for a leakey cap good luck

May 13, 2009 | Insignia NS- 27" TV27 TV

3 Answers

White lines across TV screeen

if these lines are just at the top of the picture then i would suspect an electrolytic capacitor in the vertical circuit.

May 08, 2008 | Standard (CRT) Televisions

3 Answers

White horzontal lines on the top of screen

Typical symptom of a faulty screen voltage capacitor. You'd need a schematic to locate the cap and then change it out.


Mar 10, 2008 | Philips 32PT6441/37 32" TV

2 Answers

No picture on screen

if its wired to cable/satelite test scart leads unplugg /plug back in and if you have xbox unplug that while watching tv then plug in when u want to use it hope this helps it worked on mine

Sep 26, 2007 | JVC AV-32S575 32" TV

1 Answer

Toshiba colorstream 27A33 TV

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.

Sep 05, 2006 | Toshiba 27A30 27" TV

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