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    #1

    laptop died - GPU needs reflow?

    Hey folks, so, my laptop died. I had it in sleep mode for about an hour then it wouldn't wake up. Or at least the screen wouldn't.

    It is a toshiba satellite L645D-S4036 from 2010

    The power on light becomes white, the hdd light blinks once (HDD spins up and appears to be fine), but no beeps or backlight. This laptop has an led backlight.

    Tried removing hdd, removing and swapping ram, but no beeps. I'm thinking it isn't getting that far in the POST process. Tried removing battery pack, removing CMOS battery, still no luck. No video on the VGA out either.

    Has ATI Radeon HD4520 GPU. CPU is a Phenom II P820 (1.8GHz, triple core). Memory is 2Gb-x2. No burn marks on anything.

    Also, leaving it on in this partly dead state, the heatsink warms up as usual ans the fan turns on when necessary.

    Connectors all look good.

    Ideas? I've got someone who has a shop nearby, he has BGA soldering equipment.

    so, do you think this could be fixed by a simple reflow? (A reball would last longer, wouldn't it?)

    It was a perfectly good computer, before this happened. (Ran windows7 quite speedily)
    Muh-soggy-knee
    Tags: None
    #2
    Re: laptop died - GPU needs reflow?

    take a mild reflow to confirm that its the gpu giving a no display fault. - if positive, reball

    Comment

      #3
      Re: laptop died - GPU needs reflow?

      or try the basics first. remove power adapter and battery. press and hold power button for at least 15 seconds. try it with battery

      Comment

        #4
        Re: laptop died - GPU needs reflow?

        Probably needs a reflow. just had an HP with a Radeon HD4250 with a bad chip.

        Comment

          #5
          Re: laptop died - GPU needs reflow?

          Originally posted by shovenose View Post
          Probably needs a reflow. just had an HP with a Radeon HD4250 with a bad chip.
          A bad chip or bad solder balls? Lol I think I meant HD4250 also, I keep switching them xD

          Originally posted by fddizon View Post
          or try the basics first. remove power adapter and battery. press and hold power button for at least 15 seconds. try it with battery
          That was the first thing I did actually xD
          Muh-soggy-knee

          Comment

            #6
            Re: laptop died - GPU needs reflow?

            in this case it will be bad solder! Usually these ATIs dont fail, even if they fail they are so cheap...

            Comment

              #7
              Re: laptop died - GPU needs reflow?

              Originally posted by senndogg View Post
              in this case it will be bad solder! Usually these ATIs dont fail, even if they fail they are so cheap...
              Good to hear, I agree too, mainly because the failure was after the computer cooled down - when it cooled down the solder just gave-way. But I don't want to be too optimistic, incase something else is wrong
              Muh-soggy-knee

              Comment

                #8
                Re: laptop died - GPU needs reflow?

                I do wonder, what capacitors are used in laptop VRM's... It looks like they never did failed...

                Comment

                  #9
                  Re: laptop died - GPU needs reflow?

                  Originally posted by tmiha71 View Post
                  I do wonder, what capacitors are used in laptop VRM's... It looks like they never did failed...
                  Contrary to the problems with the capacitor made by 'nec-tokin' in toshiba laptops, my laptop doesn't have one. It has a handful of smaller rectangular, black capacitors.
                  Muh-soggy-knee

                  Comment

                    #10
                    Re: laptop died - GPU needs reflow?

                    Time for a Lenovo or Dell, then?

                    Comment

                      #11
                      Re: laptop died - GPU needs reflow?

                      Originally posted by shovenose View Post
                      Time for a Lenovo or Dell, then?
                      Not yet. Going to have reflowed first.
                      Muh-soggy-knee

                      Comment

                        #12
                        Re: laptop died - GPU needs reflow?

                        i am pretty sure it will gain extra 3-12 months life after reflowing.

                        Comment

                          #13
                          Re: laptop died - GPU needs reflow?

                          Originally posted by senndogg View Post
                          i am pretty sure it will gain extra 3-12 months life after reflowing.
                          Reballing would last longer, right?
                          Muh-soggy-knee

                          Comment

                            #14
                            Re: laptop died - GPU needs reflow?

                            ^ If done properly with leaded solder, it should.

                            Comment

                              #15
                              Re: laptop died - GPU needs reflow?

                              Originally posted by momaka View Post
                              ^ If done properly with leaded solder, it should.
                              totally agree with that!

                              Comment

                                #16
                                Re: laptop died - GPU needs reflow?

                                Originally posted by senndogg View Post
                                totally agree with that!
                                Yeah I've been thinking the same thing. At least a web search suggests that it will be longer lasting. I kinda liked this computer, so I wish it will last a long time xD
                                Muh-soggy-knee

                                Comment

                                  #17
                                  Re: laptop died - GPU needs reflow?

                                  @ben7
                                  Something like this, see picture, they're probably the same (or very similar), some kind of poly, but (pictured) ONLY 1000 h at 85 degC, those on the picture are NEC-TOKIN, so called NEOCap....
                                  Attached Files

                                  Comment

                                    #18
                                    Re: laptop died - GPU needs reflow?

                                    Originally posted by tmiha71 View Post
                                    @ben7
                                    Something like this, see picture, they're probably the same (or very similar), some kind of poly, but (pictured) ONLY 1000 h at 85 degC, those on the picture are NEC-TOKIN, so called NEOCap....
                                    HA yes they look just like that. 1000 hours?! That isn't nice. I'm sure they ran quite close to 85C, if not more!

                                    Now I do wonder if one has gone short, or the like!
                                    Muh-soggy-knee

                                    Comment

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