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820-2915 Macbook pro 15 early 2011 No picture

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  • 820-2915 Macbook pro 15 early 2011 No picture

    I change the GPU (U8000) on this board (problem video), a pad come with the GPU.
    It's the number 400 (NC_LVDS_EG_A_DATA_N<3>)
    Now the mbp start with fan and i hear the superdrive but shutdown when normally the screen come white.
    Do you know if the pad is really use by GPU?
    thanks

  • #2
    The pad shoudn't really be an issue as far as I know, its says NC (Not Connected) in the signal name and there are no connections to it to be found on the board view.

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    • #3
      Where did you buy the GPU?

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      • #4
        I buy from a supplier in poland (1608), is it good? i reflow the GPU and now it work.
        thanks

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        • #5
          The 1608 are the fake ones with the engraved model number.

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          • #6
            ok but why some boards work with this chip?

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            • #7
              I can sell you a reballed chip and grind off the numbers and put some new letters on it.
              These chips are sanded, polished and remarked with new date code. In fact they are reballed 2011 garbage that will fail again in a few months.

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              • #8
                ok and how can find good chips? is it possible to test the chip before mount on a board?

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                • #9
                  There are no good chips, they are all gone.

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                  • #10
                    ok how are you do when you receive this board, garbage only? or you reball the chip?

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                    • #11
                      I have bought chips when they were still available and invested $20K in them. I think the only ones you can sort of find right now are 216-0809000, also many of those are fake, but real ones are still out there.

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                      • #12
                        ok really good invest . but now too late for me. can i change the chip by this one 216-0809000?
                        thanks

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                        • #13
                          do you have a file with all good date code by each chip? or where do you find this information?

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                          • #14
                            I have no information on that. It is all a mine field and if you are not an expert in assessing chips everyone will try to sell you junk. My advice is to stay away from GPU repairs at the moment. Maybe in a few months there will be new supply of chips, count on 6 months or so.

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                            • #15
                              can i change the chip by this one 216-0809000?

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