Dishwasher has Badcaps!

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • capwizard
    Badcaps Legend
    • Jun 2016
    • 1991
    • USA
    #1

    Dishwasher has Badcaps!

    Dishwasher has capsistor also, when I fix the leak of the input hose (pic 2) I found it has A motor start cap. at 23.5uf/250v (Parts No.W10334457)

    Maytag PORTABLE DISHWASHER MODELS: MDC4809PAW1


    Some single-phase AC electric motors require a "run capacitor" to energize the second-phase winding (auxiliary coil) to create a rotating magnetic field while the motor is running.

    A motor capacitor, such as a start capacitor or run capacitor (including a dual run capacitor) is an electrical capacitor that alters the current to one or more windings of a single phase AC induction motor to create a rotating magnetic field.

    Single Phase Induction Motor, How it works ?
    https://www.youtube.com/watch?v=awrUxv7B-a8

    Three Phases Induction Motor ?
    https://www.youtube.com/watch?v=LtJoJBUSe28

    Induction motor, 1 phase, manual start removing capacitor.
    https://www.youtube.com/watch?v=GFUa7bjNsZk

    What is main function of capacitor in single phase induction motor?
    https://www.bayt.com/en/specialties/...duction-motor/


    Do you know how many AC motor in your house?
    Attached Files
    Last edited by capwizard; 02-15-2017, 08:54 AM.
    Tags: None
    • redwire
      Badcaps Legend
      • Dec 2010
      • 3906
      • Canada
      #2
      Re: Dishwasher has Badcaps!

      Hurray! they went back to using a start capacitor?
      Maytag dishwashers I've fixed use a "starting relay", cheaper than a start capacitor.

      Under high current motor load, the relay pulls in and connects the (wash or drain) start winding until motor current backs off.
      Anyhow, the relay gets sticky or contacts fail.

      A real bear to troubleshoot- if it's the motor or the starting relay or mechanical friction causing the motor to not startup.
      Attached Files

        Comment

        • jiroy
          Badcaps Legend
          • Jun 2016
          • 2416
          • Lebanon
          #3
          Re: Dishwasher has Badcaps!

          It is the same basic that creates Earth poles , a rotating magnetic field in the Earth's core . The equivalent capacitor in Earth's core could be like in the high atmosphere's levels , approximately 1 Farad ...

          Just to say Hi to the genuis wizard

            Comment

            • capwizard
              Badcaps Legend
              • Jun 2016
              • 1991
              • USA
              #4
              Re: Dishwasher has Badcaps!

              Yes I bought this, Maytag Dishwasher, 3 years ago. when I junk some appliance I saw that (starting relay) I misunderstand it as A current limiter.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • Prolog
                  RTX 3080 FE Identifying capacitor
                  by Prolog
                  Hi people, I hope this is the correct spot to post this, I'm new to the forum.

                  I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.

                  I hope these photos make it clear which component I am referring to:
                  (yes, the soldering is a bit botched from removing the blown one, I know)

                  I have found the board schematic (attached), but there does not seem to be a boardview available. I have never...
                  12-01-2024, 08:27 PM
                • Per Hansson
                  Motor run capacitor physical size vs voltage rating & measurements?
                  by Per Hansson
                  (TL;DR skip the first paragraph)
                  I encountered my first dead motor run capacitor at a customer this week.
                  For some fields I guess it is a very common occurrence but the usual way for industrial machines here is to use 3-phase motors.
                  (Unless a servo motor makes more sense that is).
                  But for some reason this 3-phase machine uses a 1-phase motor for its liquid coolant pump.
                  The pump would run but sometimes trip the 10A breaker.
                  I monitored it starting and stopping for over an hour until it finally stopped in a specific spot between its windings:
                  Then it could...
                  09-20-2020, 06:32 AM
                • chth96
                  If I replace with inferior capacitor, Is it No harm to other IC components at all?
                  by chth96
                  I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
                  Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
                  It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
                  So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
                  I know that these capacitor will not last as long as nichicon capacitor...
                  12-22-2023, 04:34 AM
                • chth96
                  How can I test non-polarized capacitor?
                  by chth96
                  I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
                  I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm

                  And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
                  I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,...
                  06-02-2024, 07:31 PM
                • juergenb
                  Nescafe Aeroccino, still fails with new Motor (red flashes only once)
                  by juergenb
                  Hi,

                  i am asking for some Help.
                  I have one of these Nescafe Aeroccino (Milk Frother) things with a bad motor.
                  The Motor didn´t start anymore and internet is full of users just swapping the motor for a Mabuchi RF-500TB-12560.
                  So i got a few of these from Banggood.

                  I swapped the motor and now i have a new fault condition.

                  In a working Frother you would press the start button, it will light red and work for a few minutes.
                  If you press longer it will light blue and just mixup the milk.

                  With the new Motor it just starts...
                  03-23-2021, 11:24 AM
                • Loading...
                • No more items.
                Working...