Toshiba L500 power comes on, no display, no activity

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  • inflex
    Badcaps Veteran
    • Aug 2012
    • 544
    • Australia

    #1

    Toshiba L500 power comes on, no display, no activity

    Power, charge, power-on lights work, fan fires up, powers down normally too if you hold the button.

    Has a separate ATi GPU card on it - tried reflowing it, had success for a couple of weeks but dead again. Not even sure if it is the GPU or just pure luck.

    I've heard some inkling that the Southbridge is a faulty point, but I'm not even getting to the point where the BIOS even fires up yet.

    Ideas?
    YouTube Repair Videos - https://www.youtube.com/user/19PLD73
    FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv
  • tomodachi
    Badcaps Veteran
    • Apr 2012
    • 595
    • Turkey

    #2
    Re: Toshiba L500 power comes on, no display, no activity

    Are you working it with a lab type power source or an adapter ? I mean can you tell how many amper it uses after power on ? if it is under 1 A then you can try to reflow GPU.

    Comment

    • inflex
      Badcaps Veteran
      • Aug 2012
      • 544
      • Australia

      #3
      Re: Toshiba L500 power comes on, no display, no activity

      Sadly I don't have a suitable lab PSU to test it on.

      For now I've just added the machine to the 'almost trash' pile.
      YouTube Repair Videos - https://www.youtube.com/user/19PLD73
      FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv

      Comment

      • masud
        Badcaps Veteran
        • Jul 2011
        • 317
        • Bangladesh

        #4
        Re: Toshiba L500 power comes on, no display, no activity

        token or bios

        Comment

        • inflex
          Badcaps Veteran
          • Aug 2012
          • 544
          • Australia

          #5
          Re: Toshiba L500 power comes on, no display, no activity

          Masud, what do you mean by "Token" ?
          YouTube Repair Videos - https://www.youtube.com/user/19PLD73
          FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv

          Comment

          • selldoor
            Slow Learner
            • Dec 2010
            • 7870

            #6
            Re: Toshiba L500 power comes on, no display, no activity

            Hi I think he might mean Tokin as in NEC/Tokin capacitor.
            These have been mentioned before in relation to Toshiba problems.
            Search for previous threads.
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

            • inflex
              Badcaps Veteran
              • Aug 2012
              • 544
              • Australia

              #7
              Re: Toshiba L500 power comes on, no display, no activity

              Originally posted by selldoor
              Hi I think he might mean Tokin as in NEC/Tokin capacitor.
              These have been mentioned before in relation to Toshiba problems.
              Search for previous threads.
              Ah yes, of course, the NEC/Tokin cap, unfortunately this model doesn't use them ( I've replaced plenty of the other ones ). Thanks for the translation.
              YouTube Repair Videos - https://www.youtube.com/user/19PLD73
              FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv

              Comment

              • ben7
                Capaholic
                • Jan 2011
                • 4059
                • USA

                #8
                Re: Toshiba L500 power comes on, no display, no activity

                My satellite L645D died randomly one day. Wouldn't come out of sleep mode...
                Something on the motherboard died, something which I couldn't track down..
                Muh-soggy-knee

                Comment

                • hitmen
                  Senior Member
                  • Oct 2013
                  • 79
                  • Pakistan

                  #9
                  Re: Toshiba L500 power comes on, no display, no activity

                  i have same problem with my nec versa pro laptop.
                  My nec laptop can't show any thing on screen, when i press power button all the indicators on normally and fanes hdd runs normaly but can't boot, restarting again and again only show black screen. I opened it and found an ic named nec/ tokin OE128 broken/burned.
                  I want to know how can i fix it or change it? And i want to know, it is IC OR Capacitor? And which capacitor(uF/V?) i can use to replace it and fix problem.


                  Please help me any expert.


                  Thanks.

                  Comment

                  • hitmen
                    Senior Member
                    • Oct 2013
                    • 79
                    • Pakistan

                    #10
                    Re: Toshiba L500 power comes on, no display, no activity

                    I am new here and glad to see cooperating and helping people each others here.

                    Comment

                    • hitmen
                      Senior Member
                      • Oct 2013
                      • 79
                      • Pakistan

                      #11
                      Re: Toshiba L500 power comes on, no display, no activity

                      As I am new here, so i can't start new thread here for my own problem. But my problem is matching a some bit with this thread.

                      Comment

                      • ben7
                        Capaholic
                        • Jan 2011
                        • 4059
                        • USA

                        #12
                        Re: Toshiba L500 power comes on, no display, no activity

                        Originally posted by hitmen
                        As I am new here, so i can't start new thread here for my own problem. But my problem is matching a some bit with this thread.
                        Use the 'search' tool in that black bar to search the forum for the biiiiiiiig mega thread on the NEC-TOKIN capacitor issue
                        Muh-soggy-knee

                        Comment

                        • hitmen
                          Senior Member
                          • Oct 2013
                          • 79
                          • Pakistan

                          #13
                          Re: Toshiba L500 power comes on, no display, no activity

                          Originally posted by ben7
                          Use the 'search' tool in that black bar to search the forum for the biiiiiiiig mega thread on the NEC-TOKIN capacitor issue
                          Please give link of that thread.

                          Comment

                          • hitmen
                            Senior Member
                            • Oct 2013
                            • 79
                            • Pakistan

                            #14
                            Re: Toshiba L500 power comes on, no display, no activity

                            Originally posted by hitmen
                            i have same problem with my nec versa pro laptop.
                            My nec laptop can't show any thing on screen, when i press power button all the indicators on normally and fanes hdd runs normaly but can't boot, restarting again and again only show black screen. I opened it and found an ic named nec/ tokin OE128 broken/burned.
                            I want to know how can i fix it or change it? And i want to know, it is IC OR Capacitor? And which capacitor(uF/V?) i can use to replace it and fix problem.


                            Please help me any expert.


                            Thanks.
                            Plz hlp.

                            Comment

                            • dj_ricoh
                              Badcaps Legend
                              • Jan 2013
                              • 2073
                              • uk

                              #15
                              Re: Toshiba L500 power comes on, no display, no activity

                              the link below its what you need
                              Just cook it! It's already broken.

                              Comment

                              • dj_ricoh
                                Badcaps Legend
                                • Jan 2013
                                • 2073
                                • uk

                                #16
                                Re: Toshiba L500 power comes on, no display, no activity

                                Originally posted by hitmen
                                Plz hlp.
                                if you want to replace that tokin capacitor you need to read this thread
                                https://www.badcaps.net/forum/showth...ighlight=tokin
                                Just cook it! It's already broken.

                                Comment

                                • inflex
                                  Badcaps Veteran
                                  • Aug 2012
                                  • 544
                                  • Australia

                                  #17
                                  Re: Toshiba L500 power comes on, no display, no activity

                                  I've got a few more TOKIN/NEC replacements to do this weekend; for me I've found 10 x 100uF 1206 cermics works really well and easy to install.

                                  For removing the NEC/TOKIN I just use a metal spudger to knock off the bulk of the capacitor, then use a 100W station + spudger to reflow/heat the remaining metal strip contacts from the capacitor and work them off.

                                  Helps a lot if you preheat the board a bit with a hot air gun before trying to solder the new caps back on.


                                  ... anyhow, doesn't solve my situation here unfortunately.
                                  YouTube Repair Videos - https://www.youtube.com/user/19PLD73
                                  FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv

                                  Comment

                                  • mubarek jemal
                                    New Member
                                    • May 2014
                                    • 2
                                    • ethiopia

                                    #18
                                    Re: Toshiba L500 power comes on, no display, no activity

                                    how can i get the bios chip file of toshiba l500-1et pleeeeeeeeees

                                    Comment

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