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HP Pavilion 15-p schematic, identify component or problem

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    HP Pavilion 15-p schematic, identify component or problem

    I would like to ask for help with HP Pavilion 15-p ( Intel Core i5 5200U Broadwell, NVIDIA GeForce 840M 4GB, M.2 SSD 256GB).

    Laptop doesnt detect discrete GPU geforce 840. I need to identify component (see attachment) which is marked 27=1M as I cannot measure power for GPU.

    If possible, please share schematic, board DAY16EMB8C0 rev C.

    Thanks for any help
    Attached Files

    #2
    Re: HP Pavilion 15-p schematic, identify component or problem

    The Component u asked for is
    Richtek RT8813C which is Multi-Phase PWM controller with PWM-VID reference.
    link: http://www.richtek.com/Products/Swit...specid=RT8813C

    Comment


      #3
      Re: HP Pavilion 15-p schematic, identify component or problem

      AS this
      Attached Files

      Comment


        #4
        Re: HP Pavilion 15-p schematic, identify component or problem

        tibd thanks for helping with that component.

        Now I need schematic or the part with GPU power circuit as I need to measure why I cant get any power on discrete graphic

        Or any other idea?

        Comment


          #5
          Re: HP Pavilion 15-p schematic, identify component or problem

          Schematic available please?

          Comment


            #6
            Re: HP Pavilion 15-p schematic, identify component or problem

            Here you go.
            Attached Files
            OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

            Comment


              #7
              Re: HP Pavilion 15-p schematic, identify component or problem

              Thanks a lot Piernov!

              Comment


                #8
                Re: HP Pavilion 15-p schematic, identify component or problem

                Friends, the problem still persist after changing PU2 RT8813. I dont understand why I cant read power on GPU and what is wrong.
                Can somebody experienced help me?

                Here are values on PU2 when powered on (page 41):
                1 BOOT1 4.6V
                2 UGATE1 80mV
                3 EN 3.1V
                4 PSI 3.3V
                5 VID 1.5V
                6 REFADJ 0.99V
                7 REFIN 0.9V
                8 VREF 2V
                9 TON 20mV
                10 RGND 0V
                11 VSNS 68mV
                12 SS 10mV
                13 TSNS/ISEN3 2V
                14 TALERT/ISEN2 2.5V
                15 VCC/ISEN1 5V
                16 PGOOD 3.3V
                17UGATE2 67mV
                18 BOOT2 4.5V
                19 PHASE2 66mV
                20 LGATE2 0V
                21 PVCC 5V
                22 GND/PWM3 0V
                23 LGATE1 0V
                24 PHASE1 60mV

                Comment


                  #9
                  Re: HP Pavilion 15-p schematic, identify component or problem

                  Voltage on +VIN_VGACORE? Resistance to ground on +VGACORE?
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                  Comment


                    #10
                    Re: HP Pavilion 15-p schematic, identify component or problem

                    Voltage on +VIN_VGACORE about 19V, resistance to ground on +VGACORE about 8-9ohms

                    Comment


                      #11
                      Re: HP Pavilion 15-p schematic, identify component or problem

                      Make sure it is properly soldered and really new. Indeed I don't see why it wouldn't work.
                      Could you check the signal on pin 5 VID with an oscilloscope?
                      You've got an issue similar to https://www.badcaps.net/forum/showthread.php?p=754862 btw.
                      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                      Comment


                        #12
                        Re: HP Pavilion 15-p schematic, identify component or problem

                        The IC is really new one, checked soldering again with same result.
                        Dont have any osciloscope

                        Comment


                          #13
                          Re: HP Pavilion 15-p schematic, identify component or problem

                          Maybe you've got an issue with BIOS (corrupted or not posting for any other reason).
                          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                          Comment


                            #14
                            Re: HP Pavilion 15-p schematic, identify component or problem

                            hello....please help me
                            day16emb8c0 is on board display but not display showing. i am already nvidia chip reballd .what any solutions

                            Comment


                              #15
                              Re: HP Pavilion 15-p schematic, identify component or problem

                              Please send p212nia power schematic please

                              Thank

                              Comment


                                #16
                                Re: HP Pavilion 15-p schematic, identify component or problem

                                Please send p212nia schematic

                                Comment


                                  #17
                                  Re: HP Pavilion 15-p schematic, identify component or problem

                                  Originally posted by piernov View Post
                                  Here you go.
                                  thanks

                                  Comment


                                    #18
                                    Re: HP Pavilion 15-p schematic, identify component or problem

                                    Hello
                                    I need DAY16EMB8C0 rev C boardview

                                    Comment


                                      #19
                                      Re: HP Pavilion 15-p schematic, identify component or problem

                                      thanks

                                      Comment

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