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My 32lg3000 tv as a thick band that moves up my tv in a darker shade. serail: 901manjif607 product# 2A.AEKLQLWP

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  • richard_k371 Jul 18, 2010

    i've got a 6inch band that moves up on my 32 lg3000 lcd tv in a darker shade of colour

  • richard_k371 Jul 20, 2010

    than

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  • Master
  • 4,806 Answers

Hi,

This sounds like the backlight is bleeding or having the clouding effect.

This is a common problem with LCD tv's and there is not much you can do about this apart from go into the tv picture setup menu and drop the contrast and brightness. This in most cases kind of hides the bleed but it will however be still visible when you watch certain programs.
Some tv's have a special menu that allows you set backlight settings. If your LG tv has one of these settings go through the settings until you find one that your happy with.
Replacing the backlight itself can cost as much as the tv was brand new.

I have an LCD tv which is having the same problem, i adjusted the settings and the cloud is hardly noticeable.

If of course the tv is still under LG's warranty you could send it back to them for repair.



Regards.

Posted on Jul 18, 2010

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  • Master
  • 19,396 Answers

Hi.

First try connecting the TV to a different main socket, a bad ground on line can cause similar problems.

Also test the TV on different inputs, and using different cables and devices (eg. DVD and external receiver box or console).

The problem is likely main controller board. PSU failure may cause the same problem.

Repair must be done by a technician, first testing PSU voltages, then testing and eventually replacing main controller board.

Here parts, the main controller is not in stock. It must be ordered from LG (if available)

Here service manual with schematics and troubleshooting diagram. Click Get Manual on the left.

Posted on Jul 18, 2010

  • Ginko
    Ginko Jul 18, 2010

    Hi.

    I wanted to add that the technician can also try the adjustment procedure described at page 10 and following of the service manual (Here service manual). I do not think that the adjustment will fix the problem. Problem is more likely fixed reading voltages from PSU and following the troubleshooting chart at page 16 of service manual to find fault.


    Regards.

    Ginko.


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