Samsung UE65TU7172 – BN41-02751C – CI+ ECP Keys Missing / Digi Card Not Working

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  • nader_guesmi
    New Member
    • Jul 2025
    • 2
    • Romania

    #1

    Samsung UE65TU7172 – BN41-02751C – CI+ ECP Keys Missing / Digi Card Not Working

    Hey everyone,

    I’m working on a Samsung UE65TU7172 with mainboard BN41-02751C. The TV powers on normally, I’ve applied the latest software update, and all measured voltages are correct.

    Problem: The CI+ module doesn’t read the Digi card.

    I accessed the service menu (using Mute + 2 + 4 + 7 + Exit) and ran the CI+ test. The results show:
    • CI+ production keys: Success
    • ECP keys: Not installed

    So the TV doesn’t even attempt to communicate with the CAM/card.

    I’ve tried multiple Digi cards (both old and new), and they work fine on another TV. Even testing a new CI+ card/support shows the same issue.

    Looks like this is not a card problem, but something with the board or eMMC software — the keys for CI+ ECP are missing.

    Has anyone dealt with this issue before? Any advice on how to restore the missing keys without replacing the mainboard would be hugely appreciated.

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