RCA L26WD26D 26 in. LCD TV Logo
Anonymous Posted on Oct 27, 2008

42" LCD tv shows picture on only half of the screen,other half dark!

42" Polaroid LCD tv shows picture on only half of its screen. Other half is dark.
Sound is ok.

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  • Posted on Oct 07, 2011
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The T-Con board (otherwise known as LVDS) connects to two seperste parts of the LCD panel. If you do have half a picture (left or right) replacing the T-Con board should resolve this issue. Open your TV, find the part number and search on eBay or at sites like www.flattvparts.co.uk where you can search by TV model number.

  • Frank Brabin Jun 17, 2013

    God I was stupid back then - BEFORE YOU GO REPLACING THE T-CON first try unseating and reseating the ribbin cables that attach the T-con board to the screen driver boards. In most cases one of them is just loose.

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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/
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42 " lcd Polaroid ....only

That is more likely to be failing T-CON board or bad connection on the ribbon cable between the LCD panel and the T-CON board.
Learn more here:

http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT


PDF download: http://www.mediafire.com/?zzjygannjty

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
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Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
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I have a LG 42LB5D 42" 1080 LCD television that

hi, usually you can correct this issue with only a few system checks, dark streaks can be caused by damaged pixels on the screen, in which case you need to replace the TV.
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  • Change the input setting so you are viewing the contents of a different device. If the dark streaks are gone, you know they are due to the device connected to it. However, if the dark streaks remains no matter what input the TV is connected to, the problem lies with the television.

  • Inspect the cable connection. Oftentimes when connecting a computer to an LCD TV, you can have strange dark streaks across the screen. Use a DVI-to-HDMI cable connection when plugging in your computer, then press the "Menu" button on your TV remote, select "Picture" and chose "Square Pixel." See whether the image adjusts and the dark streak goes away.
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