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Macbook pro logic board replacement parts quesion

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    Macbook pro logic board replacement parts quesion

    i have a 2020 macbook pro 13" A2251 with 820-09149 logic board so i found an issue with chip labeled U6903 according to schem. boardview using flexBV software, so i removed it from the board and the issue im having is that the chip says "07A08FI ELC180" on top of it but when searching for a replacement chip, i can find tons of identical looking chips that also have "ELC180" printed on them but the first set of digits is never the same so im trying to find out if i need this exact chip with these same numbers as mine and if not which ones are compatible as a replacement? if someone could help me i would greatly appreciate it! also where would i find a good replacement for F7000 on the same board which is a fuse i believe

    #2
    Post a pic of the IC that shows the topside markings. The smd fuse is available from Digikey / Mouser / Arrow.

    SF-1206HV12M-2 by Bourns | Fuses | Arrow.com

    SF-1206HV12M-2 Bourns Inc. | Circuit Protection | DigiKey

    0685H9120-01 Bel Fuse Inc. | Circuit Protection | DigiKey
    Last edited by mon2; 08-21-2024, 05:26 PM.

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      #3
      Here is A picture like you requested and I just zoomed in using my iPhone so I hope it's good enough and I tried to get the flash to glitter on the numbers good enough so you would be able to read them hopefully lol

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        #4
        This ic is the TPS62180 buck regulator.

        Available from Digikey / Mouser and other distributors that sell Texas Instruments parts:

        https://www.mouser.ca/ProductDetail/...qUlJeTt3Jq3msc

        Review the datasheet and note the topside markings ‘ELC180' to identify this bga packaged part. The other markings are datecodes.

        Suggest to practice soldering on a donor board before attempting this repair or work with a local cell phone repair shop for assistance. There is a polarity to the chip so note the direction of the text before starting.
        Last edited by mon2; 08-28-2024, 06:12 PM.

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          #5
          ahhh OK, thank you very much for the information. That's where the problem lay for me, was the discrepancy in the first set of digits bc all the parts I could find simply had the matching second set of letters and numbers, but the first set never matched when I was searching for a replacement parts but I was unaware that that was datacodes so thank you very much once again I really appreciate all your help because I've been scouring the Internet, high and low trying to figure out where to locate that part with the matching numbers lol

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            #6
            The type of chips are posted in the schematic. If you look at the schematics, every component has the identifier and part name. Don't waste time looking for parts with the code printed on them.

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