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Dell xps 9560 la-e331p dead

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    Dell xps 9560 la-e331p dead

    Dell xps 9560
    La-e331p (schematics only available for dell xps 9550 la-361p)
    Similar but vram different
    hi laptop not working
    When motherboard powered on it takes 0.25 amp for about 3 sec then goes back to 0.001
    When at 0.25 amp
    3.3v ok
    5v ok
    1.2v ram ok
    1.0v pch ok
    0.9v cpu vccio ok
    1.0v cpu sa ok
    1.3v gpu ddr ok

    No voltage on pl 1200,pl 1201.1202(cpu vcc core)
    No short detected anywhere
    Problem appears to be in isl95829a
    No pwm vcore1a,1b,1c
    And fccm core only 2v (think should be 5?)
    Isl95829a got
    Vin 13.5v
    5vs
    3vs
    +vccst
    Vr enable
    Vr ready
    Sda,sclk, #alert sygnals communications with cpu ok all 1v
    Replaced isl95829a but still same
    Pu1200,pu1201,pu1202
    Cpu vcore drmos
    1pwm core 0v
    2fccm core 2v
    3 boot 4.5v
    6 vin 13.6v
    14 5vs-5v
    Stuck here bios flashed any help?

    #2
    Re: Dell xps 9560 la-e331p dead

    Find out DRAMRST or PWRGOOD Ok or not

    Comment


      #3
      Re: Dell xps 9560 la-e331p dead

      if u have PJP701 or PJP702 try remove the solder and see if pc power on ok.

      Comment


        #4
        Re: Dell xps 9560 la-e331p dead

        Originally posted by techtiger View Post
        Find out DRAMRST or PWRGOOD Ok or not
        Where i can Measure these signals?

        Comment


          #5
          Re: Dell xps 9560 la-e331p dead

          Originally posted by dellxps15 View Post
          if u have PJP701 or PJP702 try remove the solder and see if pc power on ok.
          if i remove jumper pjp701 and pjp 702 same reaction but takes less amp 0.15 due to this line off but board behave the same

          Comment


            #6
            Re: Dell xps 9560 la-e331p dead

            I have replaced isl95829a once again and fb_a signal is missing from cpu .....resistance in this line ok
            No communication with cpu?? Dead cpu??

            Comment


              #7
              Re: Dell xps 9560 la-e331p dead

              Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
              ALL_GPWRGD ?
              Last edited by Techtiger; 09-16-2020, 02:36 PM.

              Comment


                #8
                Re: Dell xps 9560 la-e331p dead

                Originally posted by techtiger View Post
                Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
                ALL_GPWRGD ?
                Hi aftet more measurements
                PCH_PLTRST#_EC missing this is probably last signal before vcc_core
                On Uh7
                I've got
                Pin 1 PCH_PLTRST# -0v
                Pin 2 PCH_PLTRST#-3.3v
                Pin 4 PCH_PLTRST#ec -0v
                Im little confused why pin 1 and 2 got same name but are not connected (diode mode)
                Can i connect pin 1 and pin 2 and try to power up the board???
                Attached Files

                Comment


                  #9
                  Re: Dell xps 9560 la-e331p dead

                  [QUOTE=barakuda123;988851]Hi aftet more measurements
                  PCH_PLTRST#_EC missing this is probably last signal before vcc_core
                  On Uh7
                  I've got
                  Pin 1 PCH_PLTRST# -0v
                  Pin 2 PCH_PLTRST#-0v
                  Pin 4 PCH_PLTRST#ec -0v
                  This signal comes directly from pch ....can I inject 3.3v from other source on pin 1,2 UH7 and power on board??? Will this be safe?

                  Comment


                    #10
                    Re: Dell xps 9560 la-e331p dead

                    [QUOTE=barakuda123;988884]
                    Originally posted by barakuda123 View Post
                    Hi aftet more measurements
                    PCH_PLTRST#_EC missing this is probably last signal before vcc_core
                    On Uh7
                    I've got
                    Pin 1 PCH_PLTRST# -0v
                    Pin 2 PCH_PLTRST#-0v
                    Pin 4 PCH_PLTRST#ec -0v
                    This signal comes directly from pch ....can I inject 3.3v from other source on pin 1,2 UH7 and power on board??? Will this be safe?
                    uplode the Schematic that you have the my one is different

                    Comment


                      #11
                      Re: Dell xps 9560 la-e331p dead

                      [QUOTE=techtiger;988930]
                      Originally posted by barakuda123 View Post

                      uplode the Schematic that you have the my one is different
                      There's no schematics for 9560 only for 9550 and 9570 There's a boardview for 9560 tho
                      I'm just combining all 3
                      Power sequence os from 9570 tho most if not all start up signals are the same

                      Comment


                        #12
                        Re: Dell xps 9560 la-e331p dead

                        [QUOTE=barakuda123;988949]
                        Originally posted by techtiger View Post

                        There's no schematics for 9560 only for 9550 and 9570 There's a boardview for 9560 tho
                        I'm just combining all 3
                        Power sequence os from 9570 tho most if not all start up signals are the same

                        This is the 9560 schematics buddy.
                        😊👍👍
                        Attached Files

                        Comment


                          #13
                          Re: Dell xps 9560 la-e331p dead

                          [QUOTE=Weelcup;988959]
                          Originally posted by barakuda123 View Post


                          This is the 9560 schematics buddy.
                          😊👍👍
                          This is schematics for dell xps 9550.....very similar to dell 9560 but that's no power up sequence thats why I'm using power sequence from 9570
                          Dell 9550 =la-c361p
                          Dell 9560 =la-e331p
                          Dell 9579 =la-g341p

                          Comment


                            #14
                            Re: Dell xps 9560 la-e331p dead

                            First remove UH7 & see if the voltage is back pin 5/ 1/ 2 , Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
                            Last edited by Techtiger; 09-18-2020, 12:39 AM.

                            Comment


                              #15
                              Re: Dell xps 9560 la-e331p dead

                              The la-e331p schematic is available on a few paid sites,it hasn`t leaked onto any free sites yet.
                              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                              Comment


                                #16
                                Re: Dell xps 9560 la-e331p dead

                                Originally posted by SMDFlea View Post
                                The la-e331p schematic is available on a few paid sites,it hasn`t leaked onto any free sites yet.
                                Can you please share where? Already paid few times for 9569 schematics and it always turned out to be 9550 (vinafix)...i will be happy to pay for 9560 la-e331p schematic

                                Comment


                                  #17
                                  Re: Dell xps 9560 la-e331p dead

                                  Originally posted by techtiger View Post
                                  First remove UH7 & see if the voltage is back pin 5/ 1/ 2 , Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
                                  Hi after removing uh7 still no voltage on pin 1 or pin 2(pch_pltrst#) on this board its rd31 i believe you asking for ddr4_dramrst# and h_dramrst# when i power up the board voltage jums for 0.5 sec to 50mili volts than down to zero

                                  Comment


                                    #18
                                    Re: Dell xps 9560 la-e331p dead

                                    pin 5 UH7 do you get 3V ? if you have a hot air gun heat the PCH and see as for the Schematic RD31@ no stuff find out RD35 or put a jumper 1.2V & see what is the resistance to GND on RD31

                                    Comment


                                      #19
                                      Re: Dell xps 9560 la-e331p dead

                                      Can you annotate the pins of UH7 on the picture of the board with your voltage measurements?
                                      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                                      Comment


                                        #20
                                        Re: Dell xps 9560 la-e331p dead

                                        [QUOTE=barakuda123;989017]
                                        Originally posted by Weelcup View Post

                                        This is schematics for dell xps 9550.....very similar to dell 9560 but that's no power up sequence thats why I'm using power sequence from 9570
                                        Dell 9550 =la-c361p
                                        Dell 9560 =la-e331p
                                        Dell 9579 =la-g341p
                                        I see. I agree the power should be close to the one with 9570 or 9550..

                                        Comment

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