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LCD TV Backlights Overheating transformer on Samsung LN40B550K1F

By on May 6, 2013
lcd tv repaired

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8 Comments

  1. K V MANI KUMAR

    May 7, 2013 at 12:09 am

    Sir Can we repair LCD Panel ( SCREEN ) Is there
    any methods . what about Inverter of LCD TV ? How to check SMPS of SAMSUNG 32" LCD. These are included in your Training ?

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    • Jestine Yong

      May 7, 2013 at 10:03 am

      Hi KV,

      If the display is permanent one vertical or horizontal lines then it can't be repaired. If it deals with display problem then you can try to repair provided if you can find the lcd controller ic part. Inverter and SMPS of LCD TVs can be repaired and you need to visit this link https://www.jestineyong.com/resources-2/ to look for the LCD TV repair section. If you have no expereince in electronics repair I suggest that you get the Testing Electronic Components ebook first.

      Jestine

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  2. nambafuram

    May 7, 2013 at 1:37 am

    I like your website and it has helped to prosper in my studies, do u also repair phones I will be grateful if you reply me.thanks

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    • Jestine Yong

      May 7, 2013 at 9:57 am

      Hi Nambafurm,

      Thanks but sorry I don't repair phone.

      Jestine

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  3. zed

    May 7, 2013 at 10:46 am

    nice added info on troubleshooting technique. thanks.
    Zed

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    • Jestine Yong

      May 7, 2013 at 10:48 am

      Hi Zed,

      Thanks to Dave too for creating the video.

      Jestine

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  4. Belew

    May 20, 2013 at 10:00 pm

    my name is belew i am ATM machine technician and also repairing power supplies, one of my customer bought Samsung LCD TV,model:ps43e470,41 inch, after it working for one month its sound output stoped,i reset it and tried to check all setting its OK but still it has no sound for temporary solution i took sound directly from the receiver to external speaker and also i suspect the problem is at main board tried to check components by digital multimeter all are good except ICs.
    pls help me my personnel email is belew_2005@yahoo.com.
    best regards
    belew

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    • Jestine Yong

      May 21, 2013 at 11:15 am

      Hi Belew,

      If all other output don't have sound most probably the mainboard MCU/Flash Rom could have problem.

      Jestine

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