How to find the right capacitor for my 70's film projector

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  • wepouaout
    New Member
    • Nov 2014
    • 6
    • Netherlands

    #1

    How to find the right capacitor for my 70's film projector

    Today the capacitor connected to the motor of my 1970's EIKI SL2 16mm film projector broke down. While running a film the projector suddenly slowed down and came to a halt very slowly. At the same time I heard a hissing sound from within. When I opened the back of the projector I noticed a yellowish wax-like substance was pouring from the top of the very hot "sh condenser", which I believe is also called a capacitor, connected to the motor. Don't know what caused it, but the projector had been out of service for a while before I ran it today. It may well be coincidence, a normal end of life.

    Needless to say I'd like to get it fixed again. The capacitor seems like something replaceable, but the broken original being a 1960's version I am not sure how to identify the correct modern replacement.

    The original was made by Nidec and reads "SH CONDENSER 2.3uF 500 WV AC Nidec". It connects to a 220-240V 0.7A Nidec AC induction type electro motor with a 144-168W power consumption.

    I had a look around on internet to find a suitable replacement, but had no luck finding one with the exact same specs. I don't know how much, of if at all, I can deviate from 2.3uF 500 WV. So my question is what could be a good replacement capacitor spec. Maybe you guys can help get me in the right direction.
    Attached Files
  • goontron
    5000!
    • Dec 2011
    • 4108
    • US

    #2
    Re: How to find the right capacitor for my 70's film projector

    Its a common HVAC runcap.
    Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

    "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

    Excuse me while i do something dangerous


    You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

    Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

    Follow the white rabbit.

    Comment

    • selldoor
      Slow Learner
      • Dec 2010
      • 7870

      #3
      Re: How to find the right capacitor for my 70's film projector

      How many leads go into it - how many pins inside.
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

      Comment

      • wepouaout
        New Member
        • Nov 2014
        • 6
        • Netherlands

        #4
        Re: How to find the right capacitor for my 70's film projector

        Number of leads on top: two. One is connected to a red wire, another to a grey wire.

        Comment

        • wepouaout
          New Member
          • Nov 2014
          • 6
          • Netherlands

          #5
          Re: How to find the right capacitor for my 70's film projector

          I also have a circuit schema that shows how the red and grey connect.
          Attached Files

          Comment

          • stj
            Great Sage 齊天大聖
            • Dec 2009
            • 31170
            • Albion

            #6
            Re: How to find the right capacitor for my 70's film projector

            what's on the top?
            spade connectors, solder terminals? or just wires coming out of glue?

            and what's the length and diameter?

            Comment

            • japlytic
              Badcaps Legend
              • Oct 2005
              • 2086
              • Australia

              #7
              Re: How to find the right capacitor for my 70's film projector

              I think you would get away with a 2.2uF or a 2.5uF 500VAC unit in this case.
              My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

              Comment

              • selldoor
                Slow Learner
                • Dec 2010
                • 7870

                #8
                Re: How to find the right capacitor for my 70's film projector

                Just a query but could he use one of these:
                http://www.ebay.com/itm/Black-3uF-50...-/231291666780
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • stj
                  Great Sage 齊天大聖
                  • Dec 2009
                  • 31170
                  • Albion

                  #9
                  Re: How to find the right capacitor for my 70's film projector

                  there are no shortage of motor caps,
                  it's just a matter of getting the best fit - hence my question about how it's connected to the wires.

                  Comment

                  • wepouaout
                    New Member
                    • Nov 2014
                    • 6
                    • Netherlands

                    #10
                    Re: How to find the right capacitor for my 70's film projector

                    stj, it is attached to the wires by solder terminals. See attached photo.

                    Based on the suggestions I've received so far, I'll be looking for a 500VAC between 2.2uF and 2.4uF or possibly 2.5uF. I've now found some of those units on eBay, as selldoor suggested. I am a bit familiar with soldering and proper wire insulation, so it shouldn't be a problem gettings things connected.
                    Attached Files
                    Last edited by wepouaout; 11-27-2014, 03:54 AM.

                    Comment

                    • stj
                      Great Sage 齊天大聖
                      • Dec 2009
                      • 31170
                      • Albion

                      #11
                      Re: How to find the right capacitor for my 70's film projector

                      http://www.rapidonline.com/Electroni...Run-Capacitors

                      you see here, they come in several styles - so choose the easiest one to fit.

                      Comment

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