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LG DVD Video Out Problem Repaired

By on September 22, 2015
dvd lg repair

 

 

 

 

 

 

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The complaint of this LG DVD Player was it has power (see the above picture) but the display/image was totally bad (see the two pictures below).

It was not the TV fault because the TV works fine when connected to another DVD player. It was not the cables also because I have replaced the cables and the problem was still the same.

dvd video problem

dvd video problem repair

As usual, we need to open the cover in order to check the internal section. The first thing I saw was the cockroach’s crap (excrement/feces) all over the place which include the circuit board (see the three pictures below):

roach crap

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dvd ic

I had to clean the area especially the circuit board using the PCB chemical and after that need to check for continuity of the circuit traces. It seems that the circuit traces were fine.

cleaning dvd board

So, the next thing I did was to apply soldering paste onto the SMD IC legs before using a SMD rework station to perform the reflow

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smd rework dvd player

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After done the cleaning and the reflowed of the ICs I powered On the DVD player and take a look at the result below:

dvd player repaired

dvd player repairing

Conclusion- I did not replace any components in this set. If the cleaning and the reflow did not bring back the good picture I will recheck again the circuit board. Probably there could be leaky components or may be a broken circuit track that I have missed out. If you are just starting out in DVD player repair and wish to know more about DVD player repair you can visit this link to find out more.

suranga

This article was prepared for you by Suranga Bandara who owns an Electronics shop in Anuradapura, Sri Lanka.

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Note: You may check out his previous repair article in the below link:

https://www.jestineyong.com/tweeter-speaker-repaired/

 

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5 Comments

  1. Yogesh Panchal

    September 22, 2015 at 9:34 pm

    Good Job Suranga,
    Thanks for Sharing.

    Likes(3)Dislikes(0)
  2. Tonke

    September 23, 2015 at 2:31 am

    Servisol has an excellent silicone grease in a tube.

    Suranga, , your uncharging of a tube is rather harsh. You should use the soft flash method, which means you have to use a high voltage probe and a digital voltmeter. Use the probe until the tube is fully discharged. Philips Netherlands told me themselves.

    Likes(1)Dislikes(0)
  3. Robert Calk

    September 23, 2015 at 2:51 am

    Good job, Suranga. Insects can cause a lot of damage. After applying flux to the pins, I usually just go down them with my soldering iron after putting a little fresh solder on it.

    Likes(1)Dislikes(0)
  4. Thomas

    September 23, 2015 at 9:31 am

    Hi, great job
    I have satellite receive technomate,suddenly,it freeze and when I turn it on where the number channel,is only shows 3 lines instead the channel number ,I did open the cover the all the capacitors okay,what would be the problem?
    Thanks.

    Likes(0)Dislikes(1)
  5. STEVE

    February 13, 2019 at 12:32 pm

    where can i buy main board for LG HR690 241X142 EAX64044001 HDD RECORDER HR698D, STAMPED 2010-12-17
    HELLO PLEASE WAIT, IS WHAT THE DVD SAYS?

    Likes(0)Dislikes(0)

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