Samsung UN40ES6150FXZA power issues

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  • rlega
    Senior Member
    • Jan 2014
    • 93
    • United States
    #1

    Samsung UN40ES6150FXZA power issues

    Hello everyone,

    Someone was selling a Samsung UN40ES6150FXZA pretty cheap because of no power. When you connect the two pin power cable, the tv won't power on at all, you won't even see a light.

    I checked the fuse close to the power connector for continuity and it is OK. I got .5v when I connected one of the leads to the fuse, and the other lead to ground.

    I also saw a varistor surge absorber (14D751), when I put my DMM on continuity it reads 703 or 705 ohms. I did the tests with the board disconnected and removed from TV. I'm wondering if I'm doing it correctly.

    The power board has a number of BN44-00502A (PD46A1_CSM).

    The fuse I tested has a number of T5.0AH / 250V

    Amazon has the same power supply with close up pic: http://www.amazon.com/SAMSUNG-UN40ES...pr_product_top

    Has anyone heard about this TV having power issues?

    Thanks
    Attached Files
    Last edited by rlega; 05-15-2014, 05:11 PM.
    Tags: None
    • Caleb
      Smokin IC's
      • Feb 2013
      • 645
      • USA
      #2
      Re: Samsung UN40ES6150FXZA power issues

      If you have no voltage on either end of the fuse it would imply you may have a bad cord as there isn't much between the plug and the fuse. check continuity of cord to both sides of connector plug. can we get a picture of the under side of the board as well so we can see traces between plug and fuse?
      Liberating magic smoke one part at a time

        Comment

        • rlega
          Senior Member
          • Jan 2014
          • 93
          • United States
          #3
          Re: Samsung UN40ES6150FXZA power issues

          Thanks for the reply.

          I checked the cord and it has continuity. I checked around and found a cable from an ac adapter that I had, and they are the same. Used that other cord, and the tv still won't turn on.

          Here are pics of the back of the board.
          Attached Files

            Comment

            • Caleb
              Smokin IC's
              • Feb 2013
              • 645
              • USA
              #4
              Re: Samsung UN40ES6150FXZA power issues

              OK if you have continuity on the cord you must not be getting the correct measurement points. The center two legs of the bridge rectifier should have 120 v ac when you measure across them. The outside legs should have about 170v of DC. If those voltage are present next we want to look at the legs of that big blue capacitor, it should have 170v DC as well. You can use chassis ground when measuring the secondary voltages but you need to use the negative leg of that cap as your ground when measuring the primary.

              Probably should check that second fuse for continuity as well.
              Last edited by Caleb; 05-15-2014, 10:15 PM.
              Liberating magic smoke one part at a time

                Comment

                • Caleb
                  Smokin IC's
                  • Feb 2013
                  • 645
                  • USA
                  #5
                  Re: Samsung UN40ES6150FXZA power issues

                  Added notes to you picture let us know if all is well up to this point.
                  Attached Files
                  Liberating magic smoke one part at a time

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                    • rlega
                      Senior Member
                      • Jan 2014
                      • 93
                      • United States
                      #6
                      Re: Samsung UN40ES6150FXZA power issues

                      Caleb,

                      Thank you for your help. I'm sorry for the late reply. I got a new job and I have not login to badcaps since then. I did the readings that you told me, and the power supply was OK. I was scratching my head, so what I did is took the power supply to be tested at a TV store. The guy tested it and came up OK, so then I set my eye on the main board.

                      I searched for the main board online and ordered it from eBay at a very good price. The main board arrived, hook it up, and wala, TV working. So eventhough it had no power, that didn't mean it was the power supply unit like I thought at the beginning

                      Thank you much for the help (Y)

                        Comment

                        • Caleb
                          Smokin IC's
                          • Feb 2013
                          • 645
                          • USA
                          #7
                          Re: Samsung UN40ES6150FXZA power issues

                          Glad you got it working again, thanks for the update on your success!
                          Liberating magic smoke one part at a time

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