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Receiver does not show stereo light

Discussion in 'Troubleshooting and Repair' started by CMarangon, Apr 1, 2013.

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  1. CMarangon


    Feb 3, 2013
    I have an ancient receiver Polyvox PR 1800 (decade of 1970).

    It gets FM strong and fine but does not show stereo light.

    I already replaced the CA1310 (FM stereo decoder) and the CA3089 (oscilator) and the problem continues.

    What can be the origin of the problem?
    Last edited: Apr 1, 2013
  2. davenn

    davenn Moderator

    Sep 5, 2009
    maybe the lamp has blown ??

  3. CMarangon


    Feb 3, 2013
    Lamp is working.
    Tomorrow I will play a music of Beatles (We can Work it Out) that has singers in one channel and instruments in other, to see if it is generating stereo. I will use a CD and an FM stereo transmitter. Maybe it is only the indicator that is not working.

    Lamp power, as I can see, comes directly from the CA1310. I intend to replace it again.
    It is possible that it has burnt during soldering.
  4. shrtrnd


    Jan 15, 2010
    Make sure you have a proper antenna for FM reception (They're directional, if you're
    far from the transmitter).
    From your second post, you're apparently using an auxillary input to check if your
    receiver/amplifier is outputting a stereo signal.
    They're two different things.
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