MP type cap for a tape deck electric motor

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  • patra710
    New Member
    • Sep 2009
    • 9

    #1

    MP type cap for a tape deck electric motor

    Hi, I have an Akai reel to reel tape deck that has a MP type of cap on the motor. I would like to change it out because I get a lot of noise through my amp when changing tape speeds. It is two caps in a can mark 2 uF and 1 uF at 250 WV AC, with 3 lugs coming out of one end. Any ideas what I can use to replace this cap. Thanks
  • rhomanski
    nowhere man
    • Dec 2009
    • 5157
    • U S of A

    #2
    Re: MP type cap for a tape deck electric motor

    All the dual cans I found were larger in capacitance. You could get a metallized polypropylene in 1 uf and one in 2 uf and tie one end together. http://www.parts-express.com/audyn-c...citor--027-108 http://www.parts-express.com/dayton-...citor--027-414 .
    sigpicThe Sky Is Falling

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    • patra710
      New Member
      • Sep 2009
      • 9

      #3
      Re: MP type cap for a tape deck electric motor

      Thanks nowhere man. I will look in to that.

      Comment

      • juliadream
        Otaku Mode
        • Dec 2015
        • 44
        • UK

        #4
        Re: MP type cap for a tape deck electric motor

        I remember these. MP is as rho says.. metallized poly.. they don't usually fail tho. More likely cause of your big bangs and thumps is a failure of the cap (if there is one) directly across the speed switch The MP caps are there to stop the motor putting "hash" back on the power rail due to arcing on the brushes if it's a brushed motor... I've used standard mains filter caps on these with no bad results. Would be useful to know the model as some you are supposed to not change the speed when the tape is running because of the large spike on the power rail.. While you are in there.. also check the little wire from the chassis to the screen of the playback tape head.. if that comes adrift the machine is prone to picking up more mains/switching noise.

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