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TV screen dislay partial horizontal beam

Model - Bush 2137T 21"
The problem has been deteriorating gradually and now the TV screen is only displaying a horizontal 1" picture. The sound is still ok and the channels are still working. Any comments please. Thank you in advance.

Mario.

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  • 252 Answers

You had a problem on vertical section of your tv, if can fix it ,change the 100/50 volts capisitor on .vertical section or else all capasitors in vertical section

Posted on Oct 08, 2008

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My bush tv is 2 years old and has 2,sometimes 3 vertical lines running down middle of screen.what could be the problem please.x


Hi Roberta.

its the horizontal circuit fault in the Tv. Look back from the Yoke socket and from the two red and blue terminals and you you will get into the horizontal circuit

uusually its components starts with the number 4 at the Tv chassis

resold the components there good and this problem will be fixed

as its a solding loss or track cut at the tv chassis

you need to be familiar with tv repair to do this or get technician to fo thid for you

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Why I have a thin line across the screen in my TV model Panasonic TC 21. After replacing the vertical IC the horizontal line across the screen reduced to few inches and not as it was earlier. vertica


First, You should to replace by original part, then you should check the voltages on power supply, and check the voltage for vertical IC based on datasheet, also check the voltages on vertical section including yoke and last you should check the ESR capacitors on vertical section.

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Have a Samsung 50" plasma tv with horizontal black


There are two possibilities for this fault. If COF module has any loose contact, or, display itself. If you wish to get more details about these type of fault to Plasma display, check the link given here. It has screen-shots of defective plasma dislay. Compare them to that of your TVs' and make sure. http://electronicshelponline.blogspot.com/ View it in Timslide option.

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Picture size


I found the user manual online, and the pictures in it are really helpful and make this make a lot more sense, but:
1. Press [SCREEN MODE], to switch the TV aspect ratio.
2. Press [SCREEN MODE] repeatedly until the normal screen displays.
NOTE: • Some programs may not offer all display mode options.
4:3 Programming
[Sidebar] Sidebar displays a 4:3 picture at its standard 4:3 size. Sidebars will be displayed on the right and left edges of the screen.
[Full] Full displays a 4:3 picture at a 16:9 size, with horizontal elongation necessary to fill the screen.
[Cinema] Cinema displays a 4:3 picture at a 16:9 size, with less horizontal elongation necessary to fill the screen because a little bit of the top and bottom edge of the screen will be cut off.
[Wide] Wide displays the center of the picture as original size and the outer sides of the picture will be elongated. The size of the picture will depend on the original signal.
16:9 Programming
[Full] A picture is displayed at 16:9 size as it is.
[Zoom] Zoom displays a 16:9 picture without changing its horizontal and vertical ratio, at its maximum size.
[Cinema] Cinema displays a 16:9 picture with vertical elongation.
[Expand] Expand displays a 16:9 picture with horizontal elongation

Source: LC320EM8 User Manual
http://www.manualslib.com/manual/47021/Emerson-Lc320em8.html?page=21#manual

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• Partially shorted Flyback Transformer


• Bad Deflection Yoke


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• Bad capacitors around the horizontal output transistor

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Bush 32inch tv has the power light on but has a black screen help?


Power light is there, and sound is OK, indicates the faut is with the horizontal output section. Check all the components in the horizontal output circuit. Line output transormer should be suspected.
Image of the suspected components attached.
5_9_2012_11_47_28_am.jpg

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Hi,
I hope your TV model is Sony KV-G21M1 and you see color bars as horizontal lines across the screen.
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TV screen dislay partial horizontal beam


This is a problem with the vertical circuit. Look for a small flat IC attached to a heatsink that will be marked LA7837 or something similar. It should have about 11 pins. Try resoldering the pins on that IC first. If that does not resolve the problem, replace the IC. There may be capacitors that require replacement in that circuit as well.

Keep us posted.
Dan

Oct 07, 2008 | Bush 5693D 24" TV

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