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JVC XR-330V - receiver preset memory lost

Discussion in 'Electronic Repair' started by GeorgeS, Apr 3, 2007.

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  1. GeorgeS

    GeorgeS Guest

    I understand that there may be a faulty capacitor causing preset
    stations to be lost when the unit is powered down. Can anyone point me
    to where on the board I should be looking?
    Also, if someone has a manual they can email that would be great.
    Someone tossed this receiver, but it works fine except for the preset
    and the bulb that illuminates the radio display. TIA
     
  2. Arfa Daily

    Arfa Daily Guest

    Usually, if a receiver's station memory is capacitor backed, it is a
    "GoldCap" type that you are looking for. They are normally located up with
    the system control / display processor on the front panel pcb. Most are
    green, and short and fat rather than tall and thin. They are about the size
    of a dime if you are american, or a 5p piece if you are UK. Probably about a
    quarter inch tall. They actually look like a little coin cell stack, except
    both legs come from the underneath. The value stamped on them will be
    typically 0.5 to 1F at 5.5v. Make sure that it does say something like this
    on it, as sometimes, backup really is with a tiny NiCad battery cell stack,
    which looks very like a GoldCap at first glance. If you Google GoldCap or
    "backup cap" I'm sure you will find a picture somewhere to point you in the
    right direction.

    Arfa
     
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