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Samsung LA-8863P - EC not releasing SUSP#

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    Samsung LA-8863P - EC not releasing SUSP#

    Hello.
    Have this Samsung LA-8863P that suffer from shorted capacitor between PL201 and PQ201. After replace, VIN and ALW ok. But after start button only PWR_SUSP_LED lid up for 3seconds - EC not releasing SUSP#. try to inject it and all voltages work

    Try to flash bios but still the same

    #2
    Re: Samsung LA-8863P - EC not releasing SUSP#

    Flash the EC .
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      #3
      Re: Samsung LA-8863P - EC not releasing SUSP#

      flashed but still the same

      Comment


        #4
        Re: Samsung LA-8863P - EC not releasing SUSP#

        SUSP# comes up after SLP_S3#.
        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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          #5
          Re: Samsung LA-8863P - EC not releasing SUSP#

          NO SLP_S3#, but have PBTN_OUT#. this means PCH is bad?
          Last edited by ktmmotocross; 03-04-2021, 09:37 AM.

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            #6
            Re: Samsung LA-8863P - EC not releasing SUSP#

            check resistance to ground on SLP_S3#
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              #7
              Re: Samsung LA-8863P - EC not releasing SUSP#

              Originally posted by SMDFlea View Post
              check resistance to ground on SLP_S3#
              infinity

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                #8
                Re: Samsung LA-8863P - EC not releasing SUSP#

                voltage on +1.1VALW ,EC_RSMRST# and RSMRST# . RTC (32.768KHz)
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                  #9
                  Re: Samsung LA-8863P - EC not releasing SUSP#

                  Originally posted by SMDFlea View Post
                  voltage on +1.1VALW ,EC_RSMRST# and RSMRST# . RTC (32.768KHz)
                  1.1V - ok

                  EC_RSMRST# - ok
                  RSMRST# - not found

                  where to chceck RTC clock? RTC_CLK - 0V

                  Comment


                    #10
                    Re: Samsung LA-8863P - EC not releasing SUSP#

                    check UCL1, you have a scope ?
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                      #11
                      Re: Samsung LA-8863P - EC not releasing SUSP#

                      just crappy usb hantek

                      Comment


                        #12
                        Re: Samsung LA-8863P - EC not releasing SUSP#

                        It`ll do the job, check pin 9 32.768KHz
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                          #13
                          Re: Samsung LA-8863P - EC not releasing SUSP#

                          Originally posted by SMDFlea View Post
                          It`ll do the job, check pin 9 32.768KHz
                          no voltage on pin 9. pin 16 some voltage and frequency is but is distorted . not like pulses or symetric activity

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                            #14
                            Re: Samsung LA-8863P - EC not releasing SUSP#

                            If the voltage on pin 2 and 15 is stable there could be a problem with UCL1
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