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  1. #10
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    Default important information about "hanging" or "rebooting" K790 phones.

    K790 Phone hang

    Only Applicable for K790!

    Background:
    One of the main reasons for permanent phone hangs at start up or standby
    can be resolved by replacing two resistors under the Bluetooth cavity.

    Instruction:
    ROA (PCB) with revision R3A and R3B have not been modified.
    ROA (PCB) with revision R3C has the new resistor values already from
    factory.
    ROA (PCB) with revision R3D has a new version of Dolphin 2 which prevents
    the problem and they SHOULD NOT have the resistors replaced.

    For ROA revision R3A and R3B with permanent phone hang at start up or
    standby:
    Change:
    R1404 to 470 ohms, REP 621 003/47.
    R1405 to 4.7k ohms, REP 621 004/47
    Both resistors are located under the Bluetooth cavity
    Attached Thumbnails

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