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Toshiba 27A50 picture is thin line on screen

Picture is thin line across screen

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Problem in vertical circuit--look for the vertical chip to have bad or broken solder connections....see typical one (usually mounted to metal)......
toshiba 27A50   picture is thin line on screen - 11_4_2012_4_42_59_pm.jpgusually anything from 7-13 pins and almost all are flat like this one-secured with screw at top to metal plate.

Posted on Nov 04, 2012

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: Red Line across Screen

sounds like you have a vertical sweep problem. Where the fault lies cpuld be the vertical output IC the verticle b+ feed, could be the capacitors in the vertical circuit?? Your gonna need to troubleshoot thr vrtical circuit if your not a tech thin my advise is to take the set to a pro for sn est. Good Luck

Posted on May 22, 2006

MikeNJ1964
  • 398 Answers

SOURCE: TV

The vertical output IC has stopped working. The vertical output IC is the part that drives the coils in the yoke that spreads the picture up and down. This could be because it has cracked loose from the board (solder joints) or it simply burned out. Sometimes a bad pump-up cap will cause the vertical output IC to short out, and when the IC shorts out it often opens up a small value resistor next to the flyback. This is a relatively easy thing to repair. A qualified tech will be able to tell exactly why the vertical output has stopped working and repair it for you.

Posted on Aug 25, 2007

Cybertech
  • 149 Answers

SOURCE: 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

Posted on Apr 01, 2008

bobjrdns
  • 84 Answers

SOURCE: 27" sharp has audio/no picture/ horizontal white line across screen?

bad vertical chip ic

Posted on Oct 19, 2008

johnnydiode
  • 647 Answers

SOURCE: only thin white line across my toshiba tv

This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

Posted on Sep 28, 2009

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My toshiba 55pd8800ta now has horizontal lines of picture across the whole screen. The picture and menu are out of sinc. Help!


These lines are called vertical retrace lines. Thin white lines are seen across all over the screen, at about an inch apart. If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2200 posts now. All are related to electronic equipment repair help. One among the posts has details about this fault.

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My toshiba laptop has a thick white line down the screen


The normal cause of lines across the LCD of a laptop is a damaged video cable. The unusual cause would be the video card itself.

To determine which item is at fault, you need only attach an external monitor to your laptop's video-out, and then swap your monitor view to 'both' or mirrored (usually just the function key (FN), plus one of the Fkeys...look for an off-blue picture of a monitor on the Fkeys).

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1 Answer

Thin line across the screen


The vertical control IC has failed, this is high voltage you might need a pro to do it . Julio

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not the flyback
it is either the vertical ic
or related caps
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what size screen and how old (is it worth it? that your call

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I fixed the problem by taking it to a repair shop

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

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Hi,

Most problems indicated by your description involved the Vertical IC. With your post "tap...pop back up" signifies a loose connection or to be more specific a cold solder. I suspect that no part(s) need top be replaced but would however require re-application of heat with the use of a soldering iron.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Feb 19, 2008 | Toshiba 32A50 32" TV

1 Answer

Thin horizontal line across picture


I really dont understand the problem Could we see a picture of this please?

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