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LG TV 42pc3d-ud Screen lost brightness

Screen had red pixelation in top left corner and now the screen has darkened quite a bit

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Suspects are main board and power supply board--either can do this. Keep in mind only boards are sold for this type of set---If LG Google the model number with "parts" as there is a place that sells all the boards by model number (not LG itself). You will see a list of the boards the set uses and prices.

Posted on Nov 08, 2012

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6ya6ya
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Posted on Jan 02, 2017

zjut
  • 106 Answers

SOURCE: Bright blue pixels on left side of plasma screen

try to adjust Vs & Vsc within 5% of their spec on the power supply board when you notice the problem.

Posted on Jan 01, 2008

  • 109 Answers

SOURCE: lg 50 " plazma red pixels appering around top of screen

the actual problem is some of the components on some of the boards are showing signs of age (some of the values are changing slightly) this can be compensated for by adjusting your voltages (such as va & vs ) this take a little tech knowhow. or you can replace the y sus board but adjustments are necessary whenever replacing y or z control boards. hope this helps. i may know where to get boards if you need them.

Posted on Mar 28, 2008

  • 1 Answer

SOURCE: Sound but no image on my LG Plasma TV

Have sound but no imagen

Posted on Sep 30, 2008

  • 2 Answers

SOURCE: red pixels

This prob shows up often in this set. To solve , remove the 4,784 screws from the rear cover. Plug in and connect the set. Operate until red dots appear. Locate the V_SET-UP control on the Y-SUS board ( the one on the right from the rear ) . VERY CAREFULLY and SLOWLY adjust till dots dissapear and STOP. This adjustment is VERY sesitive and requires only the slightest adjustment with a small insulated screwdiver and a steady hand. BE WARNED ... there are high voltages and high peak pulses on these boards. Not all heat sinks are grounded... some are quite lively. Dont touch anything else, unplug the set and carefully replace the cover. Good Luck..

Posted on Nov 08, 2008

  • 8457 Answers

SOURCE: my 42

ur backlight vidoe board is dead,must replaced.

Posted on Nov 23, 2009

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