Old Toshiba 2140 lap top

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  • rigeback
    Badcaps Veteran
    • Mar 2011
    • 420
    • Malta
    #1

    Old Toshiba 2140 lap top

    The LCD on this laptop faded away so tried conecting with an external monitor and it worked fine.
    Ordered a new invertor and harness but no luck not even a flicker, I tested the lcd display on another machine and works fine!
    On joining and reading about stuff on this site I am wondering if there could be a bad capacitor on the mother board, I will add a photo of the board in the next few days since its a handy machine for work on the car.
    Any advise will be appreciated.
    Tags: None
    • rigeback
      Badcaps Veteran
      • Mar 2011
      • 420
      • Malta
      #2
      Re: Old Toshiba 2140 lap top

      I finally got this lap top opened and the first thing I noticed were the
      2-Amp "fuses" F-1 & F-4 and when I tested them nether showed any signs of continuity.
      I do not have an original power supply for this lap top instead I have been using with an adjustable AC/DC power pack that supposedly to be ok for lap tops? As I mentioned the PC works fine but without a monitor.
      Attached Files

        Comment

        • Th3_uN1Qu3
          Believe in
          • Jul 2010
          • 6031
          • Romania
          #3
          Re: Old Toshiba 2140 lap top

          Since you are sure the screen is now good, replace the fuses and see what gives.
          Originally posted by PeteS in CA
          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
          A working TV? How boring!

            Comment

            • rigeback
              Badcaps Veteran
              • Mar 2011
              • 420
              • Malta
              #4
              Re: Old Toshiba 2140 lap top

              Wow I can see you've really put your grey matter to work here, how about knowing what them fuses correspond to and why they might blowen in the first place??

                Comment

                • momaka
                  master hoarder
                  • May 2008
                  • 12164
                  • Bulgaria
                  #5
                  Re: Old Toshiba 2140 lap top

                  That connector above those fuses - what does it connect to? LCD screen? Other device? Either way, just follow the cable that connects to this connector, and see what components are connected to the fuses. Let us know what you find.

                    Comment

                    • Th3_uN1Qu3
                      Believe in
                      • Jul 2010
                      • 6031
                      • Romania
                      #6
                      Re: Old Toshiba 2140 lap top

                      Originally posted by rigeback
                      Wow I can see you've really put your grey matter to work here, how about knowing what them fuses correspond to and why they might blowen in the first place??
                      Sure, if the board was in front of me i would have done exactly that. Since the board is in front of you i think you have to do it instead.

                      Most likely the fuses blew because of a fault within the inverter. You have changed the inverter so now they shouldn't blow again. Or would you have preferred some transistors to blow up instead of the fuses like in "modern designs" ?
                      Originally posted by PeteS in CA
                      Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                      A working TV? How boring!

                        Comment

                        • rigeback
                          Badcaps Veteran
                          • Mar 2011
                          • 420
                          • Malta
                          #7
                          Re: Old Toshiba 2140 lap top

                          Its the lcd conection, i'll try changing out the fuses asap.

                            Comment

                            • rigeback
                              Badcaps Veteran
                              • Mar 2011
                              • 420
                              • Malta
                              #8
                              Re: Old Toshiba 2140 lap top

                              And she works again!!

                                Comment

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