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David Young Posted on Dec 18, 2015
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Sylvania 21" no picture, but one horizontal line in center

Bedroom TV has sound, but no picture. Just a horizontal line through center of picture tube.

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Ann Lily

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  • Expert 68 Answers
  • Posted on Dec 07, 2017
Ann Lily
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10.0.0.1 IP address is the default gateway of most wireless routers or ADSL modems. There are several IP main addresses a router can take, 10.0.0.1 is the most common one though 192.168.1.1 or 192.168.0.1 are also other options. http://10-0-0-1ip.com/

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  • Sylvania Master 76,851 Answers
  • Posted on Dec 19, 2015
The Knight
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Vertical scan output section circuit fault. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

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1answer

Onida black 21 crt tv fault finding

Vertical scan output section circuit has the fault. Check it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
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I have a CRT tv and the picture is just a thin band in the centre of the picture tube. The sound is ok

That is called "Frame Collapse" because the picture "Frame" has collapsed into the single horizontal line.
It may be caused by dry joints or output failure of the frame output stage.
A fairly inexpensive repair.
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Horizontal line in toshiba TVs

its the horizontal output IC
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My 27" ( aprx 6 yrs old)Tv first had only a horizontal line across the screen about 1/2" wide, good sound but no picture, now it only clicks like its turning on and off when you plug the tv in, no pictue...

It has gone into a self protect mode where it will shut down because you have a fault in the frame stage of the TV (horizontal line). This will most likely be a failure of the frame output IC. Replace this & you should restore the normal picture.
1helpful
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TV BLACK SCREEN WITH THE POWER ON.

It needs repair.
If the line is vertical, then something is damaged on its horizontal circuit section on the mainboard.
If the line is horizontal, the vertical circuit section is damaged.
have it repaired to a qualified service center or person!
avoid switching it to avoid further damage on other parts!
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Polaroid ttm-2401

To me, sounds like a picture tube issue. horizontal / vertical controls don't fix it. then its dead.

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Sylvania 27 inch stereo flat screen tv

This problem sounds like a short inside the picture tube itself unless a driver transistor failed that drives the red gun in the CRT. You may have to take it to an authorized repair facility if the picture tube is still in warranty.
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