Question about Zenith B27A11Z 27" TV

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3/4 of my screen is black on my tv

My tv was working fine . today a large black screen covers 3/4 of the screen . When l change the channel it's fine for about 10 seconds then the same thing happens

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  • Zenith Master
  • 3,866 Answers

This is called the IC horizontal hold is faulty and would need a new IC for this. This would cost arounf $50 for the part.

Posted on May 25, 2009

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Posted on Jan 02, 2017

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Lost remote. Must do manually on t.v. Two problems:\r\n1) I cannot get channel back on channel 3. It skips from 2 to 4. 2) TV has large black box on screen covering most of screen. I can push buttons...


Try website like Remotes.com to buy the tv original remote to used.U will used the tv original remote to turn to channel 3 with ease.After u have the tv original remote push the menu button go into Closed Captioning functions turn off like TEXT 1,2,3...The big black box will not appear on the screen again.Tv used it manually control buttons up and down channels trying to get to channel 3.U will never get it to tv channel 3 because tv channel 3 was not save on it memory list of on the tv turn manually channels buttons programming memory.Tv have a manual button said MEMU button on it tv front bazel frame?Yes.Might could used the Menu button on the tv frame to get in to turn off TEXT 1,2,3...to stop the big black box to show up on the tv screen again.

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The tv was working fine the other day. I turned it out today and the screen just stays black. If I press the channel button up or down the channels change and sound comes out. The audio works fine, but the...


Turn it off/on a few times within a few mins each times.U get a flashes of picture about 10 to 20 sec?Than ur LCD inverter board is dead.Tries Websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It usally a long PC board in shape.

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I get a large black rectangle covering 1/3 of my


Is closed caption turned on? (and the channel doesn't have any captions) Turn it off.

Mar 27, 2010 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

Black Box


You have inadvertently activated one of the closed-caption modes called T1 or Text 1. Find out how to turn the closed-captioning off and on and you'll be able to turn this off.

Mar 30, 2009 | Toshiba MW27F51 27 in. TV/VCR/DVD Combo

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Black screen


use your remote then turn off the text messege of your tv.the black screen that you seen is for the messege but since their is no message written in the box ,that's why you see a black box.

Jan 26, 2009 | Mitsubishi CS-40307 40" TV

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Large Black Bar across one channel only Polaroid T.V.


Turn off CC1,2,3 or 4. You are seeing a Closed caption screen with either no data or encoded data. Usually the blank CC's are 2,3, or 4.

Jul 27, 2008 | Polaroid 1720-7 Remote Control

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Big black box in the middle of the screen


The black box is there because your closed captioning is on and set to text mode. Some channels send the signal even when there is no actual text to display. You can get rid of it by either turning off closed captioning or changing it to CC1 or CC2 mode instead of text. If you can't find those settings, then restore factory settings as directed in your user manual.

Jun 04, 2008 | JVC AV-32230 32" TV

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Problem is solved. I unplugged my DVR from my receiver for about a minute, reconnected it, and the that solved the problem.

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1 Answer

Black Square Covers 80% of screen on most channels on TV


have your tv checked by a tech.probably your chip the eprom needs to be reset by lifting it up from the board and resolder back.some one could have put in a code for those channel.good luck.

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