Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

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  • AccountSaver
    Badcaps Veteran
    • Dec 2016
    • 416
    • Poland

    #1

    Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

    Hello to all,

    Strange situation to a laptop that i have.

    It was turning on , without any screen post bios etc. so i figured i saw 2 times in the past that the particular laptop line,had issues with GPU.

    There is a way to make the descrete to UMA. By removing a coil which i did.
    Also ,it had broken update bios , and the chip was not recognisable.

    So i made both changes. Removed the Coil ,and updated the BIOS from S50-B chip that i had bought.

    The laptop turned on ,posted , in screen windows, stressed test restarted and it didn't show screen again.

    I changed back the Winbond 64 , chip just to be sure about the situation and still nothing.

    I am pretty sure that the problem occurs from the BIOS File.

    So i am posting here the "original dump which was from the broken BIOS Chip ,which wasn't even recognisable by the programmer".

    How can i find the specific bios for the specific bios ?
    (UMA)
    Attached Files
  • qayyum786
    Badcaps Legend
    • Aug 2018
    • 1933
    • INDIA

    #2
    Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

    here it is
    Attached Files

    Comment

    • AccountSaver
      Badcaps Veteran
      • Dec 2016
      • 416
      • Poland

      #3
      Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

      Originally posted by qayyum786
      here it is
      Thank you for the reply.

      But again i burned the 25winbond,and no post yet.

      Quick question this is on the U18.

      Should there be anything left in the U17 (EC Rom ? )

      Maybe i should write there as well ?

      Comment

      • qayyum786
        Badcaps Legend
        • Aug 2018
        • 1933
        • INDIA

        #4
        Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

        post your EC bios also
        Flash both at a time
        possible version mismatch or ec region is faulty
        and check what voltage do you have on bios chip on pin 8 use the same

        Comment

        • AccountSaver
          Badcaps Veteran
          • Dec 2016
          • 416
          • Poland

          #5
          Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

          Originally posted by qayyum786
          post your EC bios also
          Flash both at a time
          possible version mismatch or ec region is faulty
          and check what voltage do you have on bios chip on pin 8 use the same
          Thanks for the reply. I am trying but i can't read it. I mean , i put the chip 24 , to the "ch341a spi programmer" that i have and i cannot read it. I mean ,you press read,and the chip doesn't show anything on it.

          Do we have ,another option ?

          Comment

          • qayyum786
            Badcaps Legend
            • Aug 2018
            • 1933
            • INDIA

            #6
            Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

            Are you using clip or de solder it ?

            Comment

            • AccountSaver
              Badcaps Veteran
              • Dec 2016
              • 416
              • Poland

              #7
              Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

              Originally posted by qayyum786
              Are you using clip or de solder it ?
              de-solder of course, to make sure that the connection is good.But it remains empty .
              Should i try to "burn in" another chip that i have on the side ? 32Mbit, with 8 legs.

              Comment

              • AccountSaver
                Badcaps Veteran
                • Dec 2016
                • 416
                • Poland

                #8
                Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

                Does anyone have any other clue what i should do ?

                I cannot think of anything else, i have tested like 6-7 BIOS different.
                The 24 SOIC , is also changed many times.
                But so far,no post. Only Power ON.

                It drives me vrazy , that it was turning on , with another chip from L50-B and now it doesn't turn on ,not even with that.

                Comment

                • AccountSaver
                  Badcaps Veteran
                  • Dec 2016
                  • 416
                  • Poland

                  #9
                  Re: Toshiba Satelite S50-B-15N PSPQEE (DABLIDMB8E0 Rev:E)

                  Can someone post the EC , U17 dump?

                  Comment

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