Toshiba A300-20N restarting like bad cpu

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Prosatanosz
    Senior Member
    • Nov 2015
    • 108
    • Hungary

    #1

    Toshiba A300-20N restarting like bad cpu

    Hi!

    This unit if switched on, then shut off after 1-10 sec. And again, again, try to start. Token replaced, cpu replaced. Widthout vga card stay on, but of course no picture. Another vga card the same. MB problem, not token, not cpu, not vga card. Voltages seems ok. Any idea?

    Thx
  • SMDFlea
    Super Moderator
    • Jan 2018
    • 20286
    • UK

    #2
    Re: Toshiba A300-20N restarting like bad cpu

    Have you flashed the bios.
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

    • mielta
      Badcaps Veteran
      • Apr 2015
      • 368
      • Germany

      #3
      Re: Toshiba A300-20N restarting like bad cpu

      Hi
      Check with an Bench PSU how many amp
      i think one powersuplly is not stable

      Comment

      • Prosatanosz
        Senior Member
        • Nov 2015
        • 108
        • Hungary

        #4
        Re: Toshiba A300-20N restarting like bad cpu

        Bios replaced from other board. Still the same. There is only 2 psu switching on/off + cpu psu. Caps replaced. No luck.

        Comment

        • tomodachi
          Badcaps Veteran
          • Apr 2012
          • 593
          • Turkey

          #5
          Re: Toshiba A300-20N restarting like bad cpu

          Does it display logo or any picture before restart ?
          if yes, your choice of capacitors might be poor, insufficient or misplaced.
          u probably took your new capacitors from scrap boards, and there is a very small chance that they lost their capacitance.

          Comment

          • Prosatanosz
            Senior Member
            • Nov 2015
            • 108
            • Hungary

            #6
            Re: Toshiba A300-20N restarting like bad cpu

            No picture, at all nothing. Power on led comes on, then off repeatedly.

            Comment

            • Stevie2001
              Senior Member
              • Apr 2018
              • 183
              • irland

              #7
              Re: Toshiba A300-20N restarting like bad cpu

              Put original bios in.
              This is power fault

              Comment

              • tomodachi
                Badcaps Veteran
                • Apr 2012
                • 593
                • Turkey

                #8
                Re: Toshiba A300-20N restarting like bad cpu

                Seek for liquid damage, especially under wristbar and touchpad zone, previous repair attempsts could also make that happen.
                And what is the amps draw during restart ?

                Comment

                • Prosatanosz
                  Senior Member
                  • Nov 2015
                  • 108
                  • Hungary

                  #9
                  Re: Toshiba A300-20N restarting like bad cpu

                  No damage, no liquid, no previous repair. Current draw cant measure, sorry. Without vga card stay on. No idea. All power seems to be ok.

                  Comment

                  • tomodachi
                    Badcaps Veteran
                    • Apr 2012
                    • 593
                    • Turkey

                    #10
                    Re: Toshiba A300-20N restarting like bad cpu

                    Then there should be a dead short on VGA card, please measure the graphics chip supply ohms to ground

                    Comment

                    Related Topics

                    Collapse

                    • Document Archive
                      Toshiba Satellite Pro C660-1NQ Specification for Upgrade or Repair
                      by Document Archive
                      This specification for the Toshiba Satellite Pro C660-1NQ can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the C660-1NQ boardview and C660-1NQ schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                      09-06-2024, 05:27 AM
                    • Document Archive
                      Toshiba Satellite L655-19C Notebook Specification for Upgrade or Repair
                      by Document Archive
                      This specification for the Toshiba Satellite L655-19C Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L655-19C boardview and L655-19C schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                      09-06-2024, 05:59 AM
                    • Document Archive
                      Toshiba Satellite L635-10K Notebook Specification for Upgrade or Repair
                      by Document Archive
                      This specification for the Toshiba Satellite L635-10K Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L635-10K boardview and L635-10K schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                      09-06-2024, 05:59 AM
                    • Document Archive
                      Toshiba Satellite L655-1DJ Notebook Specification for Upgrade or Repair
                      by Document Archive
                      This specification for the Toshiba Satellite L655-1DJ Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L655-1DJ boardview and L655-1DJ schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                      09-06-2024, 05:59 AM
                    • Document Archive
                      Toshiba Portege Z30-C Notebook Specification for Upgrade or Repair
                      by Document Archive
                      This specification for the Toshiba Portege Z30-C Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Z30-C boardview and Z30-C schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba Portege...
                      09-06-2024, 05:33 AM
                    • Loading...
                    • No more items.
                    Working...