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Razer Blade RZ09-01953 no power

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    #21
    Re: Razer Blade RZ09-01953 no power

    Thanks Spider.

    Originally posted by techtiger View Post
    if you are sure of the chaging IC is ISL95520HRZ then test pin 1 2 30 31 32 ACIN is pin 1 (+19V) & GATE PASS is pin 30(+20-25V) your fist 2 FETS are N-CHANNEL what are the Reading of the 2 fets S G D ? dont remove components if you are not sure for father damage !
    techtiger here are the values for pins on ISL95520HRZ
    1 - 3.195
    2 - nothing as far as I can see, not OL or 0v just nothing, numbers on my MM bounce, I note it traces back to a resistor adjacent, the same behaviour here also
    30 - 4.63
    31 - 4.25 - 4.52
    32 - 4.25 - 4.52
    Last edited by Themi; 08-10-2020, 11:56 AM.

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      #22
      Re: Razer Blade RZ09-01953 no power

      [QUOTE=Themi;980333]When mosfets were attached to board these were the values:

      mosfet closest to DCIN
      D - 19.52v
      S - 4.3v
      G - 4.25 - 4.52v

      mosfet furthest from DCIN
      D - 4.25 - 4.52v
      S - 4.5v
      G - 4.25 - 4.52v

      Removed both mosfets from board and found mosfet furthest from DCIN is faulty after testing with diode mode on multi meter.]


      what was the reading diode mode SOURCE DRAIN GATE ?
      Last edited by Techtiger; 08-10-2020, 12:00 PM.

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        #23
        Re: Razer Blade RZ09-01953 no power

        [QUOTE=techtiger;980341]
        Originally posted by Themi View Post
        When mosfets were attached to board these were the values:

        mosfet closest to DCIN
        D - 19.52v
        S - 4.3v
        G - 4.25 - 4.52v

        mosfet furthest from DCIN
        D - 4.25 - 4.52v
        S - 4.5v
        G - 4.25 - 4.52v

        Removed both mosfets from board and found mosfet furthest from DCIN is faulty after testing with diode mode on multi meter.]


        what was the reading diode mode SOURCE DRAIN GATE ?
        I will get these readings tomorrow after replacing faulty mosfet and replacing the other.

        Do I need to conduct the diode test (-) to ground and (+) to source, drain and gate?

        While mosfets are de-soldered, is it worth conducting any other tests directly to the pads?
        Last edited by Themi; 08-10-2020, 12:11 PM.

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          #24
          Re: Razer Blade RZ09-01953 no power

          Originally posted by Themi View Post
          Thanks Spider.



          techtiger here are the values for pins on ISL95520HRZ
          1 - 3.195
          2 - nothing as far as I can see, not OL or 0v just nothing, numbers on my MM bounce, I note it traces back to a resistor adjacent, the same behaviour here also
          30 - 4.63
          31 - 4.25 - 4.52
          32 - 4.25 - 4.52
          PIN 1 must be 19V from Dc jack PIN 2 ACOK should be 3.3V depends on the plateform 31 32 should be+19V CLR PIN 30 +20V

          pin 1 is connected with a brown cap what is the voltage on the other side this cap is connected VIA or direct to DCIN try to do a continuity test with MM

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            #25
            Re: Razer Blade RZ09-01953 no power

            [QUOTE=Themi;980344]
            Originally posted by techtiger View Post

            I will get these readings tomorrow after replacing faulty mosfet and replacing the other.

            Do I need to conduct the diode test (-) to ground and (+) to source, drain and gate?

            While mosfets are de-soldered, is it worth conducting any other tests directly to the pads?
            for N-Channel Fets keeps the Probe to SOURCE Black Probe to DRAIN you should get a value above 500Ohms if you revise Probe no Value or high
            SOURCE to GATE no Value or high
            GATE to SOURCE no Value or high

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              #26
              Re: Razer Blade RZ09-01953 no power

              Originally posted by techtiger View Post
              PIN 1 must be 19V from Dc jack PIN 2 ACOK should be 3.3V depends on the plateform 31 32 should be+19V CLR PIN 30 +20V

              pin 1 is connected with a brown cap what is the voltage on the other side this cap is connected VIA or direct to DCIN try to do a continuity test with MM
              Ok this is what I have so far.

              I cannot find continuity between pin 1 and a brown cap anywhere. Can you specify using one of my images in case I have missed it. I can only find continuity between PR136 (connected to pin 1) and DCIN (blue circles).

              Voltages from charge IC. Blue circle shows continuity probe point to second blue circle in below image.


              Voltages from area near DCIN. Continuity test from previous image to here ok. Note I have found a blown capacitor at PC260 near DCIN. Resistance across this blown cap is 60K.


              PC260 (blown)


              Resistance tests at IC

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                #27
                Re: Razer Blade RZ09-01953 no power

                Originally posted by Themi View Post
                Ok this is what I have so far.

                I cannot find continuity between pin 1 and a brown cap anywhere. Can you specify using one of my images in case I have missed it. I can only find continuity between PR136 (connected to pin 1) and DCIN (blue circles).

                Voltages from charge IC. Blue circle shows continuity probe point to second blue circle in below image.




                Resistance tests at IC

                ok then it's connected with the Blue circle resistor one side +19V other side 3V may be it's faulty or leaking remove it & check with MM , check the Ohms pin 1 of PU5, remove the
                blown capacitor PC260 no
                Last edited by Techtiger; 08-11-2020, 10:19 AM.

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                  #28
                  Re: Razer Blade RZ09-01953 no power

                  Updates

                  Just want to say thanks to everyone who chimed in an helped me. Really appreciate it.

                  I managed to get everything back up and running.
                  I received the two mosfets and a replacement 100nF smd cap to replace the blow decoupling one near the DCIN.

                  I soldered then new stuff on and checked voltages. Everything came back, had my 5v, 3.3v and both mosfets were reading 19.5v at the sources. All the fuses were reading 19.5v also.

                  Tested the machine and everything was ok. Let it run on heaven benchmark for 30 min with no problems.


                  Thanks again all

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                    #29
                    Re: Razer Blade RZ09-01953 no power

                    congratz for the repair man

                    Comment


                      #30
                      Re: Razer Blade RZ09-01953 no power

                      Originally posted by dellxps15 View Post
                      congratz for the repair man

                      Thanks man

                      Comment


                        #31
                        Re: Razer Blade RZ09-01953 no power

                        hey Themi, i have the exact issue u had can u direct me to were u got the new mosfet from.mine say ''' ''
                        3R030
                        PEm
                        1602 B2
                        8455

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                          #32
                          Re: Razer Blade RZ09-01953 no power

                          Themi, where did you get your 3R030 MOSFETs from?

                          Comment


                            #33
                            Re: Razer Blade RZ09-01953 no power

                            Originally posted by tlough75 View Post
                            Themi, where did you get your 3R030 MOSFETs from?
                            PSMN3R0-30, from ebay or others

                            Comment


                              #34
                              Re: Razer Blade RZ09-01953 no power

                              thanks for this wonderful thread, saved my razer, too <3

                              Comment


                                #35
                                Re: Razer Blade RZ09-01953 no power

                                Hi guys.

                                I saw this post and maybe someone can help out.

                                I have a razer laptop with Board Betty R6_MB. I had fixed this board some time ago there was a blown fuse on DC in. It worked good but the client came back with no power issue again so i had to replace Mosfet PQ46. At the moment when all plugged in it i have 3v and 5v , bios voltage etc all like it should have ald the keyboard lights up but no voltages on cpu etc... I have a short by measuring diode mode on PL8 on the positive side towards PCP20. I removed also PQ32 and PQ35 cause it was also very low resistance but couldn't find short but it's showing exactly same as before and the laptop was working. No schematics and would appreciate any ideas.

                                Thanks

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                                  #36
                                  Re: Razer Blade RZ09-01953 no power

                                  Could be Just BIOS issue. Share Pics of the components you're talking about and where are them located. Also it Would be nice to have the voltages and Resistances of each coil to GND listed
                                  FairRepair on YouTube

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                                    #37
                                    Re: Razer Blade RZ09-01953 no power

                                    Board Betty
                                    Wait! Isn't that a woman's name ?

                                    https://www.youtube.com/watch?v=pz1rjq5emKY

                                    Are there any other markings on the logic board? Have access to at least one Razer logic board schematic.

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                                      #38
                                      Re: Razer Blade RZ09-01953 no power

                                      Hey guys. This model is loaded with cold solder joints. Just FYI.

                                      Comment


                                        #39
                                        Re: Razer Blade RZ09-01953 no power

                                        Sorry for gravedigging,

                                        I have the same laptop but instead of having voltage on the first two mosfets, I only get 20V on the drain of the first one.

                                        I get a short to ground on the drain of the second mosfet.

                                        Any idea?

                                        Attached Files

                                        Comment


                                          #40
                                          Re: Razer Blade RZ09-01953 no power

                                          Flux and remove the 2nd mosfet. Then measure the resistance to ground again. No power to the logic board during these tests.

                                          Also review the above sticky by @Piernov on charger circuits.

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