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Was looking for a fix for my 3 yr old Emerson Model LF461EM4 A, A 46-inch LCD HDTV

I was looking for a fix for my 3 yr old Emerson Model LF461EM4 A, A 46-inch LCD HDTV with LED backlighting, When I first turn it on (from cold start), everything looks fine, then after approximately a couple minutes, after warming up a bit, the Picture shows 3 distinct horizontal bands, (the bands are not made up of lines, just darker picture)... the top band is very dark, but can see the picture the middle band is a little dark, and the bottom band is just a little lighter than the middle one, and maybe near perfect. Do you have any ideas as to what this could be or where to find out about this problem. (could upload a pic, if you had that option.)

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Hi there,
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Posted on Jan 02, 2017

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  • 21 Answers

SOURCE: Rear projection TV (LG 44SZ51): Horizontal dark band on upper screen field

The LG 44SZ21RB Have a problem with their light tunnel collasping due to the heat from the lamp. They are available as a spare part @ LG and would also require some silicon adhesive to bond it into the assembly. Very tedious job for any technican (2-3 hrs). Lg will not release parts to the general public only to an authorised LG agent.

Posted on Apr 23, 2008

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taran_2005
  • 10515 Answers

SOURCE: broken horizontal stripes except for 6" band

there are two convergnece boards in this tv. one is called the convergence (DCU) the other is called the convergence amp board. this amp board has the (STK`S) on it and ids your problem. in most cases we repair this board.



good luck :)
let me know if you need more info?

Posted on Jan 11, 2009

  • 1 Answer

SOURCE: Toshiba 52WM48 - Dark line across top of screen about 4 inches

replace the vertical ic, LA 7833 and four capacitors near it, i encountered this last two days.change the parts and it ok now.
cost of this parts is about $20.00

Posted on Jan 24, 2009

  • 267 Answers

SOURCE: dark band 6 inches wide middle of the screen

YOU MAY HAVE A DEFECTIVE Y DRIVER BOARD OR A RIBBON CABLE THAT HAS COME DISCONNECTED. THIS NOT USUALLY THE PANEL SINCE THE PANEL DOES TURN ON. TAKE IT TO AN AUTHORIZED SERVICER.

Posted on Apr 10, 2009

budmrtn
  • 11361 Answers

SOURCE: verticle band of multi color

It can be T-CON board, ribbon cables between the T-CON board and the LCD panel.
Learn about T-CON board failure here: Please download and look at the sample of bad pictures:

http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT
http://www.mediafire.com/?zzjygannjty PDF download

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
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague


Posted on May 20, 2011

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