Question about Zenith B25A76R 25" TV

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Diagonal lines across picture

We were gone for six months and when we returned our Zenith TV picture had diagonal lines across the screen and after it is on for a while a steady tone came on that could not be turned down with the volume control.

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  • 96cg Mar 03, 2009

    How do i make lines across my picture like this ↓one↓

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Do you have a dvd or vcr hooked up to this? Is it hooked up with the a/v cables (yellow, red and white). double check the cable hookup make sure audio cord is not in the video jack, from what you are saying this will do that if it is. Also there is a capacitor on the main board believe it to be C3412 which intermittenly gives horz. lines but haven't had a audio tone with that.

Posted on Nov 30, 2007

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Posted on Jan 02, 2017

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1 Answer

When I turn my TV on, I have sound but only a horizontal white/color line across the screen. My TV is an old Zenith 25" floor model.


You can buy a new one for less than 200 bucks. I'd advise you do this. It sounds like you need a new
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I have Diagonal lines moving across the screen.


The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
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Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

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You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Hi There,
Sounds like your Horizontal Output Circuit is leaking current causing diagonal lines across the screen. I hope this will help and thank you for using FixYa!

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