Philips DVD Home Theater System Repair

By on April 29, 2017
tas5142 ic dvd repair

 

 

 

 

 

 

 

 

 

 

PHILIPS home theatre system repair

Customer sent to me this Philips DVD Home theater system with the complaint of Standby problem. First, you can turn on the power but after that it will revert to standby.




From experience, it may be the problem of bad mainboard or the Main amp fault. I had to removed the cover to show you the boards inside this DVD. See the photos below:

PHILIPS main amp board repair

In order to know if the Main amp fault or not, i had to pull out the cables connected to this board and power On-see the photo below:

fix dvd home theatre system

Once the cables had been pulled out and power On, the DVD now runs normally but without sound (because I had disconnected the Main amplifier board).

PHILIP amp repair

Next, I had to remove this circuit board and perform troubleshooting.

how to repair main amp

I suspected the amplifier IC fault(TAS5142) because shorted IC will usually cause Stand by problem.

tas5142 ic amp repair

Below if the TAS5142 IC datasheet:

tas5142 datasheet

I soldered out all the three amplifier ICs as seen from the photo below:

fixing main amp

I went to Ebay online to buy the parts and put them in and power On. The DVD now can work normally without shutting down (No more standby problem). See all the photos below:

PHILIPS dvd home theatre system repair

PHILIPS - HTS- Amp DF-12 repair

PHILIPS - HTS- Amp DF-14 fix

 

 

suranga

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




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Note: You may check out previous post about fixing active speaker in the below link:

http://jestineyong.com/how-to-repair-no-power-problem-in-philips-mini-dvd-player/

 

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19 Comments

  1. Albert van Bemmelen

    April 29, 2017 at 7:20 pm

    Pro job Mr. Suranga! Nice to see that it was a PHILIPS device (Royal Philips Electronics, a company in my country headquartered in Amsterdam) although the DVD player was defect. Since Philips stopped making consumer electronics and concentrated on their Lighting and Healthcare divisions, Philips consumer electronics will become rare. Now Philips is a main player in growing food from plants even in winter months before they normally would grow outside in the fields. And by changing the Led color of the lamps all sorts of fruits and vegetables grow very fast months before would be normal. http://www.lighting.philips.com/main/products/horticulture
    Something I think is really incredible and will benefit all of humanity!

    Likes(9)Dislikes(0)
    • Suranga Electronics

      April 30, 2017 at 11:03 am

      Hi. Thank you so much Albert. Yes Philips is a good brand. I liked to Repair All Philips products. Specially Philips CRT TV models. I got my 8 years job Experience at Philips Service in my country.

      Likes(3)Dislikes(0)
      • Albert van Bemmelen

        May 3, 2017 at 2:36 am

        Like you I worked before at Philips division Medical Systems near Eindhoven Suranga. There we didn't repair however, which would have made the job probably more interesting, but only manufactured Diagnostic X-ray camera's, power units, high voltage generators etc.etc. I worked there from 1995 upto 2002 until my project sadly stopped after an internal restructuring. That job and another one were the only good jobs I didn't quit out of a total of about 13 other jobs through temporary employment agencies. (some jobs were really unhealthy, asbestos, glue, tar, non-stick spray, smoke, detergents, glas wool etc.).

        Likes(2)Dislikes(0)
  2. Yogesh Panchal

    April 29, 2017 at 8:35 pm

    This type of soldering work really need high patience level and practice for soldering ; because little bit higher temperature of soldering iron and you lost the trace because of over heating.

    Congratulations! suranga.

    Likes(6)Dislikes(1)
    • Suranga Electronics

      April 30, 2017 at 11:13 am

      Yes Mr. Yogesh. Sure agree. it's same mysticism. Thanks!!

      Likes(1)Dislikes(0)
  3. Parasuraman S

    April 29, 2017 at 10:29 pm

    Great! An expert work!

    Likes(3)Dislikes(1)
  4. Mark

    April 30, 2017 at 12:18 pm

    Well done Suranga!
    Those pesky IC's are difficult to solder in place. I'm grateful I can use my digital microscope - my eyes aren't what they used to be.
    I have 2 LCD TV's that are stuck in standby mode I have purchased the IC's to replace them - I just have to find the time to do it!

    Likes(4)Dislikes(0)
  5. Henry

    April 30, 2017 at 6:37 pm

    It is interesting, but a bit too quick.
    It would be good to explain what exactly led you to the decision to replace those 44-pin IC's, all 3 of them. Where were they shorted?
    I also think that it would be very beneficial to many on this blog if you could show in more details the method and technique of the chips removal, cleaning and preparing the area, and then soldering back the new IC's.
    Many of us learn from these articles. Let's make it more clearer and more explanatory.

    Likes(4)Dislikes(0)
    • Robert Calk

      May 3, 2017 at 9:05 pm

      Hi Henry,
      Have you tried watching YouTube videos? There are plenty of videos that show that. But they also use easy IC's that don't have adhesive under them. I never see any articles or videos on YouTube that show the replacement of glued down IC's that I seem to almost always see. But at least they show how to replace the easy ones...

      Likes(2)Dislikes(0)
  6. Chaminda

    May 1, 2017 at 12:01 am

    Mr.Suranga,

    i am very prod of you.

    I would like to invite you to start conducting Electronics classes for the benefit of ours.

    I am ready to help you in terms of finding students.

    Best regards,

    Chaminda

    Likes(3)Dislikes(0)
    • suraga Electronics

      May 2, 2017 at 2:07 pm

      Hello Mr- Chaminda,

      Thank So Much. ok Mr,
      chaminda Will see.

      Likes(0)Dislikes(0)
  7. Mike Blake

    May 1, 2017 at 9:37 am

    Great job but one wonders what killed them ??

    Likes(2)Dislikes(0)
  8. Ulises Aguilar Pazzani

    May 1, 2017 at 12:32 pm

    MR Bandara , great fix Sir

    Likes(1)Dislikes(0)
  9. Mark Tembo

    May 2, 2017 at 10:22 pm

    What tool did you use to di-solder and re-solder the ICs? Did you use a normal soldering iron? Please, specify because I have a similar job involving these type of ICs with many and small legs.
    Regards,
    Mark.

    Likes(2)Dislikes(0)
  10. Robert Calk

    May 3, 2017 at 8:58 pm

    Good job, Suranga. Man, you guys are lucky! Here in the USA, nearly every time I need to replace an IC like that it is glued down with some kind of adhesive to the PCB and almost impossible to remove without damaging the PCB.

    Likes(2)Dislikes(0)
  11. Dilum

    May 4, 2017 at 1:54 am

    Good job...I like to know the temperature when you remove IC..?

    Likes(1)Dislikes(0)
  12. Humberto

    May 13, 2017 at 1:46 pm

    Nice job Suranga

    Likes(0)Dislikes(0)
  13. ramex chand

    July 8, 2017 at 12:41 pm

    yes awe some idea to isolate amp board to locate fault,as im also a technician,owning a repair shop in savu savu vanua levu fiji islands.i would like to share my repair and exchange ideas at component level repairs .anyone may use my email add to post or share.congrats wishing u all the best in future .

    Likes(1)Dislikes(0)
  14. Raju Varghese

    September 13, 2017 at 2:43 pm

    Hai suranga ,
    Good morning!!!
    nice job and outstanding soldering practice .

    Likes(0)Dislikes(0)

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