Samsung UN60H7150AF Power Supply

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  • SLK001
    Badcaps Veteran
    • May 2014
    • 264
    • USA

    #1

    Samsung UN60H7150AF Power Supply

    I have a Samsung 60" with a bad power supply (there is no boost). The power supply part number is BA44-00716A.. The diodes and the MOSFETS all check out good. The PFC IC (SPC7011) is not getting any VCC (S/B ~12V). There is another IC that is in the circuit that I can find no information about. Here is a picture of the device.



    I'm not sure which number is the part number and which one is the date code and the FUJI ELECTRIC site has nothing on either.

    Can anyone identify this part?
    Does anyone have a datasheet?
    Does anyone have a schematic for the PS?

    All help will be appreciated.
    Attached Files
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #2
    Re: Samsung UN60H7150AF Power Supply

    I wonder if it's a FA1A60N/Fa6B20N ?
    Last edited by diif; 05-28-2019, 02:52 PM.

    Comment

    • Robinsosa
      Member
      • Nov 2013
      • 19
      • kenya

      #3
      Re: Samsung UN60H7150AF Power Supply

      It is Fuji Current Resonant Control IC.

      FA6A01

      Datasheet:
      http://www.datasheetcafe.com/fa6a01n-datasheet-pdf/

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Samsung UN60H7150AF Power Supply

        So the PS-ON is always present, correct? If it is then I would trace the VCC pin of the PFC IC back to the switched regulator circuit that is turned on by the output side of the opto which is turned on when PS-ON is present.
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • SLK001
          Badcaps Veteran
          • May 2014
          • 264
          • USA

          #5
          Re: Samsung UN60H7150AF Power Supply

          Originally posted by budm
          So the PS-ON is always present, correct? If it is then I would trace the VCC pin of the PFC IC back to the switched regulator circuit that is turned on by the output side of the opto which is turned on when PS-ON is present.
          There is nothing on the output connector. It appears that the Low Side driver is dead on the 6A01. The High Output (HO) is active, the Low Output (LO) is dead - see pic.

          Does anyone have one of these for sale?

          If I can get one quick, I can get this TV back in service. Otherwise, I'll have to take a gamble and order from China (I can't find any US distributors).

          Attached Files

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Samsung UN60H7150AF Power Supply

            So right now you do not even have STBY 8V (13V when PS-ON is present) at all on jumper JP911?
            Since the board has pulled up resistors for self-test, what happen if you disconnect the main board from power board?
            Samsung BN44-00716A Power Supply.
            https://www.shopjimmy.com/samsung-bn...led-board.htm#
            Last edited by budm; 05-30-2019, 02:45 PM.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • SLK001
              Badcaps Veteran
              • May 2014
              • 264
              • USA

              #7
              Re: Samsung UN60H7150AF Power Supply

              Originally posted by budm
              So right now you do not even have STBY 8V (13V when PS-ON is present) at all on jumper JP911?
              There is nothing on connector JP911. Because the LOW SIDE driver is dead, nothing is getting through the xformer. Therefore, the whole secondary is dead.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Samsung UN60H7150AF Power Supply

                FA6A01
                So what DCV do you have on VH and VCC pin right now?
                VH provides the kick start-up Voltage to bring up VCC to startup point, the spec sheet on the link does not provide the startup Voltage spec, need to do more research on full spec of the IC next. I expect it to be 15 ~18V range.
                Attached Files
                Last edited by budm; 05-30-2019, 04:38 PM.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • SLK001
                  Badcaps Veteran
                  • May 2014
                  • 264
                  • USA

                  #9
                  Re: Samsung UN60H7150AF Power Supply

                  Here are the voltages on those pins:

                  VH - 99V
                  VCC - 11V

                  The way I understand the circuit, is HO and LO toggle the DC high voltage to energize the xformer. I have that app note and I have been unsuccessful in finding a datasheet. In the app note, there is a sample application circuit, which is similar to what is on the board.

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #10
                    Re: Samsung UN60H7150AF Power Supply

                    To me 11V seems to low for the IC to startup to get it running.
                    Never stop learning
                    Basic LCD TV and Monitor troubleshooting guides.
                    http://www.badcaps.net/forum/showthr...956#post305956

                    Voltage Regulator (LDO) testing:
                    http://www.badcaps.net/forum/showthr...999#post300999

                    Inverter testing using old CFL:
                    http://www.badcaps.net/forum/showthr...er+testing+cfl

                    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                    http://s807.photobucket.com/user/budm/library/

                    TV Factory reset codes listing:
                    http://www.badcaps.net/forum/showthread.php?t=24809

                    Comment

                    • SLK001
                      Badcaps Veteran
                      • May 2014
                      • 264
                      • USA

                      #11
                      Re: Samsung UN60H7150AF Power Supply

                      Originally posted by budm
                      To me 11V seems to low for the IC to startup to get it running.
                      I thought so too, but I checked other LLC controllers and 11V is right in the middle of the typical VCC range (9 - 15V).

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #12
                        Re: Samsung UN60H7150AF Power Supply

                        BTW, you may want to check the capacitance of the DC Blocker/Coupling cap CM803 to see if the capacitance is still OK or not, that cap in that section of the circuit are common failure in lots of Samsung power supply boards.
                        Never stop learning
                        Basic LCD TV and Monitor troubleshooting guides.
                        http://www.badcaps.net/forum/showthr...956#post305956

                        Voltage Regulator (LDO) testing:
                        http://www.badcaps.net/forum/showthr...999#post300999

                        Inverter testing using old CFL:
                        http://www.badcaps.net/forum/showthr...er+testing+cfl

                        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                        http://s807.photobucket.com/user/budm/library/

                        TV Factory reset codes listing:
                        http://www.badcaps.net/forum/showthread.php?t=24809

                        Comment

                        • SLK001
                          Badcaps Veteran
                          • May 2014
                          • 264
                          • USA

                          #13
                          Re: Samsung UN60H7150AF Power Supply

                          I just noticed an error in my original post. The power supply model is BN44-00716A, not BA44-00716A.

                          Comment

                          • R_J
                            Badcaps Legend
                            • Jun 2012
                            • 9535
                            • Canada

                            #14
                            Re: Samsung UN60H7150AF Power Supply

                            That 11 volts VCC you are measuring comes from the ic's internal startup cell, the run voltage will come from DM809, check the diode and the parts between it and the ic's vcc.
                            Do you have and DC voltage on JP885, that jumper is connected to DM809
                            Last edited by R_J; 07-30-2019, 09:13 AM.

                            Comment

                            • LazyHorse
                              New Member
                              • Sep 2020
                              • 7
                              • Australia

                              #15
                              Re: Samsung UN60H7150AF Power Supply

                              Sorry to hijack this thread - I have the same board with 10.4 VDC on JP885
                              0 VDC on STDBY

                              Any hints as to where to look next?

                              Originally posted by R_J
                              That 11 volts VCC you are measuring comes from the ic's internal startup cell, the run voltage will come from DM809, check the diode and the parts between it and the ic's vcc.
                              Do you have and DC voltage on JP885, that jumper is connected to DM809

                              Comment

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