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Need help finding LED backlight fuse [PICS]

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    #41
    Re: Need help finding LED backlight fuse [PICS]

    Checked under microscope and the black 8-legged component has written on it:
    MB20
    N03
    CCE0078

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      #42
      Re: Need help finding LED backlight fuse [PICS]

      Sorry just been dicharged from hospital (great start to new year). Anyone was anyone able to look at the pictures and identify the jumpers it.vendor is on about? Looks like I will have to fork out for a replacement laptop

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        #43
        Re: Need help finding LED backlight fuse [PICS]

        what mobo model you have?
        Just cook it! It's already broken.

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          #44
          Re: Need help finding LED backlight fuse [PICS]

          Hi, the pics are uploaded on page 2 last post if it helps. The model of laptop is k53e but the mobo says it is k53sd. Hope this helps

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            #45
            Re: Need help finding LED backlight fuse [PICS]

            Just an update, I purchased a new LCD just to make sure it wasn't that. Unfortunately the new LCD shows no back light either. Definitely a problem on the motherboard I guess. Looks like I will have to fork out for a replacement laptop this time .

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              #46
              Re: Need help finding LED backlight fuse [PICS]

              If you have CCFL displays you have to be sure that you lamp is OK and your inverter is working.
              On LED display, such as on K53, you need the schematics to find out which pin is LCD power supply, which is backlight power in which is stand by pin for the backlight, and make sure that you have all the voltages. If not follow the line backwards and measure to see where is the faulty device.

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                #47
                Re: Need help finding LED backlight fuse [PICS]

                Thanks for the reply Lord. I am unable to locate any schematics anywhere. A few others have tried to find them also to no avail. Have you ever worked on this mobo and maybe remember which pin is which? Thank you.

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                  #48
                  Re: Need help finding LED backlight fuse [PICS]

                  No, i don't remember
                  Do you have some other part number of the board besides K53SD and 69N0KAM13D02?

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                    #49
                    Re: Need help finding LED backlight fuse [PICS]

                    Only "important" looking parts numbers on the board are:

                    BTC-202B
                    94V-0

                    PN:60-N3CMB1500-C07

                    Also the clamp that holds down the heat sink has written on it: 13GNXZ1AM01X-1

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                      #50
                      Re: Need help finding LED backlight fuse [PICS]

                      I send an email to a notebookschematic.com guy with whome a recently spoke to. Usually the schematics are 10-12$.

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                        #51
                        Re: Need help finding LED backlight fuse [PICS]

                        And here is the reply:

                        Sorry, I haven't got this schematic,
                        Thank you for your interest.

                        Try to search here:
                        http://www.laptopserviz.bg/

                        I know this guy has a lots of schematics.

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                          #52
                          Re: Need help finding LED backlight fuse [PICS]

                          Thanks for the input Lord. Will try and give it a search for the schematics. Since I am looking at replacing the laptop I might just super toast it with a reflow gun.

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                            #53
                            Re: Need help finding LED backlight fuse [PICS]

                            it.vendor was on about the mosfet below pin one (8-legs) do you think it will be that? I have located the part in china

                            http://www.ebay.co.uk/itm/1-Piece-Ne...-/271125214452

                            I wouldn't have any difficulties heating it on. May give it a go and see what happens.

                            Comment


                              #54
                              Re: Need help finding LED backlight fuse [PICS]

                              If you have power on pins 1,2,3 and 5,6,7,8 then the MOSFET is OK. Also pin 4 should have some voltage.

                              Comment


                                #55
                                Re: Need help finding LED backlight fuse [PICS]

                                do u have 12v on your led

                                Comment


                                  #56
                                  Re: Need help finding LED backlight fuse [PICS]

                                  And are you sure that your screen is OK?

                                  Comment


                                    #57
                                    Re: Need help finding LED backlight fuse [PICS]

                                    The LCD is ok I ordered a replacement to double check and it also had the same problem. Any chance the LCD cable can be causing this? My multimeter has gone caput at the moment and have ordered a new one. Will test the pins when it is here .

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                                      #58
                                      Re: Need help finding LED backlight fuse [PICS]

                                      Sure, the LCD flat cable can cause this.

                                      Comment


                                        #59
                                        Re: Need help finding LED backlight fuse [PICS]

                                        New screen cable did not work either. Going to have to get a replacement laptop. Since I am, I will reflow this board in to the abyss!!

                                        Comment


                                          #60
                                          Re: Need help finding LED backlight fuse [PICS]

                                          is the gpu nvidia?

                                          Comment

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