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Tesla MCU repairability

Discussion in 'Technical' started by innerfire, Jun 11, 2019.

  1. innerfire

    innerfire Member

    Joined:
    Jan 22, 2019
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    Location:
    Bulgaria
    Hello everyone,
    I am interested in buying used Tesla Model S(very likely out of warranty one) and I am wondering if someone had some success about repairing/replacing eMMC storage on CID motherboard? As I can see this is one common problem with the older models I want to make some testing about repair ability of those motherboards/
    I have the proper equipment for programming all kinds of NAND storage (including eUFS) and also BGA rework equipment and I am looking for some PCB's which are replaced and diagnosed as "faulty".
    I am situated in Europe,Bulgaria, so I don't have such car on hand which I can dissasemble and make some tests.
    As I am planning to to this for free, it is recommended to work with someone which have the ability to test if there is any success after my work.
    The best situation for me is, if I have on hand a whole CID (even broken screen one), on which I can make the testing.

    Thank you,
     
  2. Saydanik

    Saydanik New Member

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    Location:
    La Crescenta, California
    Go see Rich Rebuilds videos on youtube: Rich Rebuilds
    He has extensive videos on the MCU as well.
     
  3. innerfire

    innerfire Member

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    Location:
    Bulgaria
    Thank you for sharing the link. I know this channel, but there are some specific details I am interested in which I can't find here.
     
  4. Saydanik

    Saydanik New Member

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    I wonder if you could reach out to him.
     
  5. innerfire

    innerfire Member

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    I found contact with Phil from Ingeneerix, but I still haven't received any response. Maybe I am on my own about this initiative. :) I will continue to look for such display module on which I can make some research.
    Thanks
     
  6. NoMoGas

    NoMoGas Supporting Member

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    Los Angeles, California, United States
    Just did mine with a 64gb chip :)
     
  7. innerfire

    innerfire Member

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    Did you placed new blank one? Did you read your old flash?
     
  8. Lecky

    Lecky New Member

    Joined:
    Nov 15, 2019
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    Location:
    UK
    Hi @innerfire

    It’s my understanding that replacing the eMMC with a blank one would result in an MCU that will not boot as the eMMC holds all the files necessary for it to boot.

    There is a very interesting thread on MCU1 repair with a lot of technical detail in the Model S forum. Search for “Preventative eMMC replacement on MCU1”, sorry I’m a newb so can’t past links.
     
  9. GSP

    GSP Member

    Joined:
    Dec 28, 2007
    Messages:
    2,517
    @widodh may be able to help. He is a thread he started on the subject:

    Preventive eMMC replacement on MCU1

    GSP
     

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