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  • November 12, 2017 at 2:50 pm #9737
    Rick
    CVRS Member

    Hi All.
    I’m working on a 1976 Motorola car radio as used in Canadian Volvos, Triumphs VWs, and John Deere Tractors etc.. It has an odd 4 pin chip used in place of the Audio Frequency Driver transistor
    I’ve attached a picture.

    One lead of the chip is connected to the base of the 2N176 Germanium PNP output transistor. I have two of these radios radios and the chip seems to be bad in both of them.
    Any help identifying the chip or finding a replacement would be appreciated.

    Thanks.

    Attachments:

    1. motorola-driver.jpg

    December 17, 2017 at 5:08 pm #9800
    Don McFarlane
    Forum Participant

    This is a Motorola MFC4050 audio integrated circuit, discontinued long ago. Hope you can find some supplier that still has them.

    Don McFarlane

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