Dish washer board

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  • Behemot
    Badcaps Legend
    • Dec 2009
    • 4845
    • CZ
    #1

    Dish washer board

    I got this dish washer board from a guy, it is supposedly acting strangely (like swapping programs and such). I haven't found anything bad, only thing which si closest to a problem I found is that big foil cap. It should be 1,5uF but has only 1 uF now and ESR of 6 ohms. Do you think swapping it is worth a shot?
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    • kc8adu
      Super Moderator
      • Nov 2003
      • 8832
      • U.S.A!
      #2
      Re: Dish washer board

      couldnt hurt.they lose capacitance and esr rises after many breakdowns and self healing events.

        Comment

        • Behemot
          Badcaps Legend
          • Dec 2009
          • 4845
          • CZ
          #3
          Re: Dish washer board

          OK, cool, I'll just have to buy some smaller and add them in parallel as they don't have 1,5uF anywhere around...
          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

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            • PeteS in CA
              Badcaps Legend
              • Aug 2005
              • 3579
              • USA, Unsure of Planet
              #4
              Re: Dish washer board

              Roederstein and possibly Iskra should have X-caps as high as 1.5uF (Roederstein has 2.2uF,IIRC).
              PeteS in CA

              Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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                Comment

                • ben7
                  Capaholic
                  • Jan 2011
                  • 4059
                  • USA
                  #5
                  Re: Dish washer board

                  Yes, the capacitor is definitely the problem. They use it instead of a transformer. It is used sort of how a resistor would work, but it doesn't waste much energy as heat. It's called capacitive-reactance ... Google it
                  Muh-soggy-knee

                    Comment

                    • Behemot
                      Badcaps Legend
                      • Dec 2009
                      • 4845
                      • CZ
                      #6
                      Re: Dish washer board

                      Originally posted by ben7
                      Yes, the capacitor is definitely the problem. They use it instead of a transformer. It is used sort of how a resistor would work, but it doesn't waste much energy as heat. It's called capacitive-reactance ... Google it
                      Yes, that's what I thought, just haven't been wize from the paths in there so I haven't said it loud . It's using the caps reactance value, just it does not burn the power rather than creates phase-variance...

                      Well it's not worth looking for ROE caps abroad if I can put in multiple smaller ones what will work just as good

                      ADD// OK so there was 1,6uF alltogether nominaly (that smaller blue 0,1uF cap is in parallel) so I used one 1uF I found here in my desoldered stuff and also 0,68uF one. That is 1,68uF nominal, 1,79uF measured, some 3,5 ohm ESR.
                      Last edited by Behemot; 06-15-2013, 02:23 PM.
                      Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                      Exclusive caps, meters and more!
                      Hardware Insights - power supply reviews and more!

                        Comment

                        • Behemot
                          Badcaps Legend
                          • Dec 2009
                          • 4845
                          • CZ
                          #7
                          Re: Dish washer board

                          Heard that dishwasher is running like charm…
                          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                          Exclusive caps, meters and more!
                          Hardware Insights - power supply reviews and more!

                            Comment

                            • ben7
                              Capaholic
                              • Jan 2011
                              • 4059
                              • USA
                              #8
                              Re: Dish washer board

                              Originally posted by Behemot
                              Heard that dishwasher is running like charm…
                              Gr8!
                              Muh-soggy-knee

                                Comment

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