hp 450 g2 la-b181p no data

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  • menshawy
    Badcaps Veteran
    • Aug 2013
    • 400
    • egypt
    #1

    hp 450 g2 la-b181p no data

    hi friends
    i have hp 450 g2 mb LA-B181P with no data problem
    when i connect the adapter power button Responds after abut 30 sec
    before press power button
    pl303 +3VDSP 3.4v ok
    pl302 +5VDSP 5.05v ok
    uh5 pin8 +3V_PCH 3.4v ok
    u17 MEC1322-NU pin 85 rsmrst pin85 0v
    after press power button
    u17 MEC1322-NU pin 85 rsmrst pin85 3.4v ok
    u17 MEC1322-NU pin 38 SLP_S4# 0v
    u17 MEC1322-NU pin 81 SLP_S3# 0v
    q21
    pin 1&2 VIN1 +3VDS 3.4 v ok
    pin 6&7 VIN2 +5VDS 5.05v ok
    pin 3 & 5 SLP_S3# 0v
    pin 9&8 13&14 0v

    help please
    thanks for all
    Attached Files
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    • Techtiger
      Badcaps Legend
      • Oct 2014
      • 1602
      • france
      #2
      Re: hp 450 g2 la-b181p no data

      Check AC_PRES_OUT / ADP_A_ID RTC Diode

        Comment

        • menshawy
          Badcaps Veteran
          • Aug 2013
          • 400
          • egypt
          #3
          Re: hp 450 g2 la-b181p no data

          Originally posted by techtiger
          Check AC_PRES_OUT / ADP_A_ID RTC Diode
          AC_PRES_OUT u17 pin 99 3.3v ok
          ADP_A_ID u17 pin 42 2.0v
          RTC Diode dc1
          pin1 3.06
          pin 3 3.4v
          thanks man

            Comment

            • Techtiger
              Badcaps Legend
              • Oct 2014
              • 1602
              • france
              #4
              Re: hp 450 g2 la-b181p no data

              Check SLP_A# ON/OFFBTN# pin 4 & PM_RSMRST out put side of the Resistor

                Comment

                • menshawy
                  Badcaps Veteran
                  • Aug 2013
                  • 400
                  • egypt
                  #5
                  Re: hp 450 g2 la-b181p no data

                  Originally posted by techtiger
                  Check SLP_A# ON/OFFBTN# pin 4 & PM_RSMRST out put side of the Resistor
                  SLP_A# u17 pin 93 0v
                  ON/OFFBTN# pin 4 3.4v
                  PM_RSMRST pin 85 3.4v
                  thanks you
                  Last edited by menshawy; 09-09-2020, 03:01 PM.

                    Comment

                    • Techtiger
                      Badcaps Legend
                      • Oct 2014
                      • 1602
                      • france
                      #6
                      Re: hp 450 g2 la-b181p no data

                      Page 42 PCH power ok can you confirm! Did you check RSMRST after the resistor? Check the resistance SLP S3 SIO pin ?
                      Last edited by Techtiger; 09-10-2020, 04:36 AM.

                        Comment

                        • menshawy
                          Badcaps Veteran
                          • Aug 2013
                          • 400
                          • egypt
                          #7
                          Re: hp 450 g2 la-b181p no data

                          Originally posted by techtiger
                          Page 42 PCH power ok can you confirm! Did you check RSMRST after the resistor? Check the resistance SLP S3 SIO pin ?
                          q30
                          D&S 3.4V
                          G 0V
                          RSMRST after the resistor 3.4 v ok
                          SLP S3 SIO pin don't has short
                          thanks for help
                          Last edited by menshawy; 09-10-2020, 07:27 AM.

                            Comment

                            • Techtiger
                              Badcaps Legend
                              • Oct 2014
                              • 1602
                              • france
                              #8
                              Re: hp 450 g2 la-b181p no data

                              Q21 Just the resistance to Ground pin 13 14 8 9 if ok put a jumper pin 1 to 14 pin 6 to 9 after check from your hands what’s getting worm if ok then try to power up & see

                                Comment

                                • Techtiger
                                  Badcaps Legend
                                  • Oct 2014
                                  • 1602
                                  • france
                                  #9
                                  Re: hp 450 g2 la-b181p no data

                                  Try to Flash BIOS with a working one voltage on YC2 2 caps ? JCMOS1 / JME1 voltage?
                                  Last edited by Techtiger; 09-10-2020, 08:34 AM.

                                    Comment

                                    • cxl2156565
                                      New Member
                                      • Jul 2020
                                      • 2
                                      • fiji
                                      #10
                                      Re: hp 450 g2 la-b181p no data

                                      AC_PRES_OUT only 2.0v

                                        Comment

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