Toshiba L645D-S4036 blinking status and battery lights

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  • ben7
    Capaholic
    • Jan 2011
    • 4059
    • USA
    #1

    Toshiba L645D-S4036 blinking status and battery lights

    So, today I updated the bios in my laptop. Everything went well!

    Now, I notice that the status light and battery light will randomly start blinking orange. Unplugging the power supply and plugging it in will make the lights return to normal. The AC power light is not affected (it stays white). What the heck is it doing this for??? The computer seems to run fine when this happens, other than drawing power from the battery. Is my computer complaining about the power supply being faulty???

    -Ben
    Muh-soggy-knee
    Tags: None
    • ben7
      Capaholic
      • Jan 2011
      • 4059
      • USA
      #2
      Re: Toshiba L645D-S4036 blinking status and battery lights

      Please, any ideas? I will check the voltage of the PSU now, and also, it says its plugged in and charging, but the battery is draining - I don't think its using power from the adapter.

      Thank you for you help (if you do help :S)!

      -Ben
      Muh-soggy-knee

        Comment

        • inflex
          Badcaps Veteran
          • Aug 2012
          • 544
          • Australia
          #3
          Re: Toshiba L645D-S4036 blinking status and battery lights

          Drop the battery out and see if it runs at all off the AC pack.

          I had a C655 doing the same and it turned out to be a dud MOSFET on the input stage for the AC side.
          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
              #4
              Re: Toshiba L645D-S4036 blinking status and battery lights

              Originally posted by inflex
              Drop the battery out and see if it runs at all off the AC pack.

              I had a C655 doing the same and it turned out to be a dud MOSFET on the input stage for the AC side.
              What does the blink code mean though?

              I will add that for a while now, the power jack has had a bad connection in it and it needs to be wiggled a little to get the connection again. Could the computer be complaining about a low voltage coming from the PSU because the bad solder joint has a high resistance?

              -Ben
              Muh-soggy-knee

                Comment

                • ben7
                  Capaholic
                  • Jan 2011
                  • 4059
                  • USA
                  #5
                  Re: Toshiba L645D-S4036 blinking status and battery lights

                  Update.

                  It hasn't blinked for a few hours now. I don't know what the heck it is doing, I didn't do anything to it.
                  Muh-soggy-knee

                    Comment

                    • ben7
                      Capaholic
                      • Jan 2011
                      • 4059
                      • USA
                      #6
                      Re: Toshiba L645D-S4036 blinking status and battery lights

                      Arg!

                      It didn't happen for a few days, but today it has started blinking again
                      Muh-soggy-knee

                        Comment

                        • ben7
                          Capaholic
                          • Jan 2011
                          • 4059
                          • USA
                          #7
                          Re: Toshiba L645D-S4036 blinking status and battery lights

                          Hello?

                          I recently ran the battery down to about 15%. Now it says it is fully charged, but the charging light indicates that it is still charging. The battery is also hot as if it was being charged. Still occasionally have the blinking problem too

                          Please give me some advice, thanks!

                          -Ben
                          Muh-soggy-knee

                            Comment

                            • datapersada
                              Member
                              • May 2012
                              • 10
                              • Indonesia
                              #8
                              Re: Toshiba L645D-S4036 blinking status and battery lights

                              Please try to check P-channel Mosfet and try replace IC Power 5v 3.3v

                                Comment

                                • ben7
                                  Capaholic
                                  • Jan 2011
                                  • 4059
                                  • USA
                                  #9
                                  Re: Toshiba L645D-S4036 blinking status and battery lights

                                  Originally posted by datapersada
                                  Please try to check P-channel Mosfet and try replace IC Power 5v 3.3v
                                  Which mosfet? I will be opening up the computer in a few days to replace the power jack which has a bad connection.

                                  It seems now that my battery is charging erratically, i have had it plugged in for an hour now and it has stayed at 49%
                                  Muh-soggy-knee

                                    Comment

                                    • datapersada
                                      Member
                                      • May 2012
                                      • 10
                                      • Indonesia
                                      #10
                                      Re: Toshiba L645D-S4036 blinking status and battery lights

                                      Check n mosfet also pq33, pq32, pq29, pq30
                                      Last edited by datapersada; 08-30-2012, 12:16 PM.

                                        Comment

                                        • ben7
                                          Capaholic
                                          • Jan 2011
                                          • 4059
                                          • USA
                                          #11
                                          Re: Toshiba L645D-S4036 blinking status and battery lights

                                          Update!

                                          I took apart the laptop today. Dis-assembly was quite easy, I was shocked that there were no plastic snaps anywhere, only screws hold things in, which is nice. I found that the positive wire that was soldered to the power jack had become brittle and broken; the jack itself was OK. Re-soldered and reinforced it, and after re-assembly I was happy to be back in business with a working computer and not so touchy power jack

                                          Time will tell if I will get that flashing lights thing again though.

                                          -Ben
                                          Muh-soggy-knee

                                            Comment

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