Question about Zenith A25A11D 25" TV

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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

Posted by Luis Arturo Algarin on

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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 :)

Posted on Mar 13, 2007

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1 Answer

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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R56w36 convergence problem. color misaligned. Ghosts.


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.

if the lines do not move with remote try manual ...menu on the set. if still no movement you have a problem on the convergence board and need a tech to fix.

A service manual will explain complex convergence to the detail .
but this might take hours to get it right.

Please feel free to get back to me If you need any further assistance.
Regards,
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Aug 10, 2008 | Zenith Televison & Video

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No picture, Horizontal line center of screen


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

You can take you problem directly to zenith. They have a customer service post available here

Mar 30, 2008 | Zenith Z32H41D TV

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This fault is technically called 'retraced lines'. There are many reasons for this fault. It will be best to contact any service technician. If the screen voltage to CRT is abnormal [higher than normal]; this kind of fault can occur. 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/
One among the post have details about this fault "Retrace lines with picture".

Mar 03, 2015 | Televison & Video

1 Answer

I need the Zenith TV , model A25A11D, remote code for the Yamaha remote RAX100 WF68870US to the Yamaha receiver RX797


The Zenith tv I was trying to install was used, free and only lasted 2 hours. Problem solved.

Jan 09, 2010 | Yamaha Televison & Video

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high voltage regulation problem. when high voltage gets too high protection circit kicks in and shuts off tv. since high voltage is too high, you will see a glow with horizontal retrace lines. if you see red, green, and blue lines your convergence ic's are overheating. suggest local service center

Nov 10, 2009 | Televison & Video

1 Answer

Zeneth A25A11D 25' tv has broken cable connector


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!

Oct 16, 2009 | Zenith A25A11D 25" TV

1 Answer

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how is the 200 volt supply to the video output transistors??
measure the collector voltage of the video output transistors with the crt board on and off the crt. if voltage goes up when crt board is off then crt shorted

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1 Answer

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you have bad solder connections on the convergance board solder then and get back to me k

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