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need source of sprague powerlytic 1600 uf 200vdc cap

Discussion in 'Electronic Repair' started by Bob in Phx, Sep 16, 2007.

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  1. Bob in Phx

    Bob in Phx Guest

    I am working on my daughters Marantz 1977 player piano. I've got some ac
    type buzz in the 170 volt dc solenoids. I figure that the filter cap is bad
    (Sprague suggests 1000 hour life span, so 1977 to 2007 that's 30 years, so
    1000 divided by 30 = 33 hours per year,, bet its got more then that, not to
    mention just the drying effects of age!!!) I've tried to find them, new, but
    can seem to get the internet to work for me today.... So what vendors would
    you all suggest?????

    here are the details of the cap

    7834l 3104
    made in the USA.

    I am guessing that 78341 is a date code, Interesting that the sales slip on
    the piano is 1977....

    Thanks in advance
    Bob in phx.
  2. The 1000 hour lifespan refers to high-temperature operation, not "normal"

    Try DigiKey, Allied, MCM, etc.
  3. Bob in Phx

    Bob in Phx Guest

    thank you sir.... I must have mis-read the specs....

    Since I have hum and since the cap is 30 years old, I am going to replace it
    anyway.... again thanks.

    bob in phx.
  4. DaveM

    DaveM Guest

    Sprague is now a division of Vishay. The 36D series of capacitor has changed,
    so you will just have to search for capacitors having the same (or close) value
    and physical size. The DC voltage spec is critical... get one that has at least
    200V rating. If this capacitor is only used to filter the supply for solenoids,
    then you might be able to skimp on the capacitance.. maybe 20% - 30% lower than
    the 16000 uFd value.
    Make sure you're sitting when you look at the price of these units.. they're
    not cheap!!!
    are good sites to start with.

    Dave M
    MasonDG44 at comcast dot net (Just substitute the appropriate characters in the

    "In theory, there isn't any difference between theory and practice. In
    practice, there is." - Yogi Berra
  5. The DC voltage spec is critical... get one that has
    But don't go over 200V, unless you have no choice.
  6. Bob in Phx

    Bob in Phx Guest

    found them at allied electronics and placed the order today... should be
    here sometime next week.

    bob in phx.

    thanks for all the help!!!!
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