Question about LG Televison & Video

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LG tv flickers really badly for 10 minutes but not on all channels. It works OK with DVD. Any ideas please before I go buy a new TV. We do use a Free sat box.

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  • LG Master
  • 14,553 Answers

You have really ruled OUT THE TV. Set is not smart enough to only have the issue on certain channels---consider if using a box for signal routing it to one of the rear audio/video inputs especially if the tv sets now getting signal via a coax/cable fitting---the box if used would be suspect number two.

Posted on Oct 30, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

jerryg50
  • 1667 Answers

SOURCE: screen flickers

This an be the power supply, or there is a component on one of the processor boards that is starting to fail.

The only way the tech can service this is to have the set opened, and wait for the fault to occure. When the set is doing the fault, he has to check the power supply distribution outputs, and at the same time use a digital scope to follow the video path through the various stages. This is a long an complicated process to find the exact fault.

Once the tech knows which board is giving the fault, he can then change the complete circuit board to fix the set.

I think what is happening is that when the set is coming in, they are not spending the adequate amount of time on it to find the fault. This type of problem is very time consuming to find.

What you can do is make a video of the fault, write the video to a DVD, and bring the set back with the DVD to show them the fault.

If you have a friend with an HDTV you can bring your DVD player to his place and try it for a while on his TV set. This would verify the player for sure.

I doubt you have an AC power problem. You can easily prove the AC power by putting a lamp on it.

When I have had this type of fault, I ended up finding the defective board in the TV and replacing it. One time, it was the customer's DVD player that was causing a fault.

Next time you buy a TV set I would suggest to you to pay a little more and stick with a major brand of TV set. They have better factory support, and are of better quality.


Jerry G.

Posted on Apr 27, 2008

  • 3 Answers

SOURCE: LG 42LC7D TV does not want to chg channels after 5 min of use

There are some inductors that are out of spec. LG's original SB said to replace some of these with a jumper, but it only lasted a couple months.

You need to have the Total Main Assy replaced.

Posted on Jul 30, 2008

lightnbaby
  • 36 Answers

SOURCE: No Picture on LG 50PC3D

No power?
Unplug power cord- safety first!
open backcover
check powersupply- top center right is p.s.
top left side of powersupply you'll see 5 capacitor 3300uF 10V.
see any pop up on top? replace it All with same rate or 16v is O.K.
do not use temperature rate 75c. Use 105C.
if you know how to solder. you could save $300 at least!

Posted on Mar 15, 2009

anoopsnoop
  • 43 Answers

SOURCE: lg flat screen tv flickers when cold

Hey,
This is nothing to be afraid of. In LCD screens, it takes some time for the liquid crystal to heat up. Thats why manufacturers warn you not to change screen settings immediately after switching your TV on.
Hope this helps
Thanks 

Posted on Apr 16, 2009

nostechjb
  • 28 Answers

SOURCE: LG LCD flickers and turns itself off

I'm guessing here.. most probably its the ccfl tubes..

Posted on Nov 15, 2009

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