Service Manual, or sugestions

I have in my service center, a Tv, Zenith model A25A11D, it has horizontal retrace lines, I have moved already the screen pot, no results. Any suggestions will be welcomed. Thanks Luis Algarin

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Https://www.manualsparadise.com/ShowProductsForModel.do?model=M25715316 they have service manual and schematics - sorry had no luck with a free one but the prices aren't too bad. Hope this helps :)

Documents forZenith A25A11D Service repair manual...

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Zenith A25A11D Service repair manual...

Posted on Mar 13, 2007

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How do you fix horizontal lines on a zenith tv

Retrace lines. 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/
Search the site with keyword 'retrace lines'

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Dear Sir:

Thank you for contacting fixya.

Please follow the steps below.

green is fixed so you have to move red and blue to green.
by using the remote you may find a simple converge function and open this and using arrow keys move the blue or red first to center of screen, repeat for other color you should see the lines moving toward a a white center point.

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Can be a case of vertical collapse. If this is the case, then the vertical oscillator and/or the vertical driver circuit are faulty. .

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Sorry, I miss-read this post. I orginally thought it said your cable broke, meaning the coax that went to the back of the TV.
The coax input is more than likely a part of the main board. I am not a tv expert but as with laptops and input modules that break you have to soder the peice on or replace the whole board.
Easier to switch to a/v inputs as mentioned in Solution #1.
I could not find a spec sheet for your model but did find this for you to give you an idea on what is entailed in replacing a broken RF connection. This may or may not apply to your model, but here it is anyway.
http://www.youtube.com/watch?v=S9v-dUyzdrk
I would suggest letting someone who is qualified in TV repair fix it.
Here are the service manuals for your Zenith. Download both and then extract to your desktop for easy access. I downloaded and extracted myself to make sure it was a working copy so you are good to go.
Part 1:
http://www.eserviceinfo.com/download.php?fileid=34271
Part 2:
http://www.eserviceinfo.com/download.php?fileid=34270

Good Luck!

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