Sony STR-V4 won't do FM stereo,anything I can do?

Discussion in 'Tuners' started by Blue Shadow, Jan 5, 2018.

  1. Blue Shadow

    Blue Shadow I gotta get me a new title

    Messages:
    20,163
    Location:
    SE PA
    This STR-V4 doesn't have an SM online. TheV4L is there but the tuner board is different. I checked and the STR-V3 has the same tuner board as the V4 I have. I'll attach some shots of it. Full manual is on HFE: https://www.hifiengine.com/manual_library/sony/str-v3.shtml

    I understand that a tuner probably needs alignment all these years after it was built but I'd like to see if I can get that nice red stereo indicator to light up again without that service which I can't do.

    Thanks for any recommendations on making the lamp light again. The bulb is good and has been tested. There is no voltage at the Stereo Lamp connection.
    V3-1.jpg

    V3-2.jpg

    V3-3.jpg
     

     

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  2. Punker X

    Punker X Moderator Moderator Subscriber

    Messages:
    3,938
    Location:
    Panic in Detroit
    Discriminator and VCO are going to be the adjustments most likely to cure your issue. Although, can also be affected by muting adjustment or issue. Misalignment in the front-end and IF can also affect the it by to a lesser degree
     

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