Question about Toshiba CF32H40 32" TV

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Screen is black wiht a single 1/8 thick horizontal line across entire screen. Sound is ok. Other TVs are working.

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Cold solder in vertical ic and check caps around to..if you see resin around any cap, change.

Posted on May 06, 2010

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So I have a 50 Lg ( LG 50LN5700). There is still a picture however about every 3 seconds it goes from regular to blurry and repeats. There seem to be about 3 black lines across the top horizontally about 3...


To clarify, are the 3 black lines horizontal (left to right across entire width of screen)? or are the 3 black lines vertical (top to bottom across entire height of screen)?

Horizontal lines are almost always the result of a failed panel, and no board replacement will fix the issue.

Vertical lines such as you have described (only 3) are probably also a bad panel. If the black lines were evenly spaced in a repeating pattern, it could be a mainboard or TCONN board.

Has this panel been cracked? or perhaps cleaned recently with too much water or cleaning solvent that has gotten the screen wet?

You may have to sell the TV for parts.

Oct 23, 2017 | LG Televison & Video

2 Answers

TV has a great picture but wont "hold it". Keeps going to a single flat horizontal line across the middle of the screen. Tapping on side of TV used to bring it back but now, nothing. Just a line.


Vertical scan output section circuit fault. Absence of vertical scan causes the single horizontal line on screen. Horizontal scan output section is OK. Contact any service technician to troubleshoot the vertical scan output section circuit. If you wish to get some details; check the site linked here. Pull up older posts.Surf the site with patience.http://electronicshelponline.blogspot.com/
Horizontal line fault to CRT based TVs are given.

Oct 06, 2014 | Televison & Video

1 Answer

My Samsung tv has thick horizontal line across top of screen


Check the LVDS cable that connects its T'Con board to display panel for any loose fitting at the both end of its sockets. Re-seat them once and check. This is not a problem with any capacitors. If you wish to get more details, check the site linked here. It has screen-shots to some faulty screens to LCD TVs. Compare them to that of your TVs' and make sure. http://electronicshelponline.blogspot.com/ Pull up previous posts there, either by its left side bar, or view it in Timeslide option.

Jul 02, 2013 | Televison & Video

1 Answer

Black horizontal lines across entire screen.


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 see the latest updates. It will make search easy. There are more than 1350 posts to different brand TVs now. Pull up older posts there or do a search by type in the Brand Name of your device in the Search Box, at the top right of the display window.

Dec 08, 2012 | LG FLATRON W2252TQ-PF 22" LCD Monitor

1 Answer

Horizontal black line running entire screen an 4 more lines running vertical


Hello
This type of fault in Plasma TVs are of power supply regulator capacitors. If any one of these DC capacitors, go low in rated value, proper smoothin of DC power does not occur. and black bars across the screen fro top to bottom will be the result. Just check for any capcitors of it power retulator side for bulged out or leaky. You have to open the TV to see whethere there is any of them is damaged. OK.

Jan 30, 2011 | Samsung 50 in. Plasma TV

1 Answer

Tv screen is black except for 1 horizontal line of color


The line is there because the vertical deflection unit - the one that spreads that line across the entire screen to form the image - has failed. Replacing it is a job for a professional, or at least an experienced amateur, and the parts will be quite difficult to find for such an old tv . 

May 28, 2010 | Panasonic CT-36DV60 36" TV

1 Answer

A horizontal thin black line has appeared across screen.


hi all .ive had the same problem,a thick black line down screen.sometimes it flickers from top to bottom and other permantly in view.but i have solved it.forget your ic boards and taking apart tv.have you got either a ps3 or wii connected to tv.if so unplug power lead from socket and relocate in seperate socket.make sure the lead is completely free of any other leads and you might just find this works.i think the power lead creates some sort of frequency that the tv picks up .good luck hope it works

Jan 27, 2010 | JVC PD-42V475 42 in. HD-Ready Plasma...

1 Answer

Red lines across bottom portion of screen


usually strong magnets like those in speakers cause lines on tvs if placed to close to the tv.
so demagnitizing the screen should work .
you may have to take it into a pepair shop to do this.
but if thats not the problem. you moe than likely are seeing a common problem of tv screen burn out. and these new tvs tend to burn out faster than the old ones did.

Apr 26, 2009 | Akai PT46DL10 46" HDTV-Ready Television

1 Answer

Picture reduced to 1/4 on a black screen


Picture is reduced to a straight horizontal line across the center of the screen.

Aug 17, 2008 | Televison & Video

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