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Testing capacitors and relays

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  • Testing capacitors and relays

    Can capacitors be checked on boards without removing them?
    Do relays have to be energized to check them?
    I want to learn the individual components of these boards and be able to repair them for s few bucks.
    Last edited by boman; 07-19-2019, 02:24 PM.

  • #2
    Hey Rick,

    You mean the components of something like a stove clock?
    If yes, that is not something we do as we only get the whole part in the appliance industry.
    An electronics message board or maybe one of the timer repair places can possibly help with that info.

    Can capacitors be checked on boards without removing them?
    Guessing....we have to remove the wires on a motor capacitor to test it.....so probably yes, unless it has swelled.

    Do relays have to be energized to check them?
    Usually yes as they can fail electrically or mechanically. Most I do is just see if the main contacts open and close when the relay is powered.

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

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    • #3
      Talking about electronic control boards on washers, dryers, stoves, refrigerators, etc.
      Thanks

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      • #4
        An electronics message board or maybe one of the timer repair places can possibly help with that info.
        This may be best then.
        http://www.applianceaid.com/appliance-timer-repair.php

        jeff.
        http://www.applianceaid.com/
        Appliance Repair Aid

        Comment


        • #5
          Bought s new soldering iron. Just going to remove them. Hope this be does better than the ones I had been trying to use.
          Better point and more wattage.

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          • #6
            I have had to solder a few weak joints over the years and I found a good solder sucker is also needed when you want to remove something from a board.
            Hope this all works for you Rick!

            jeff.
            http://www.applianceaid.com/
            Appliance Repair Aid

            Comment


            • #7
              “Solder sucker.”
              Agreed.
              I don’t have one right now. Plan to try small braided wire to help get the solder off.
              Btw, this is concerning the Kenmore dryer I posted about getting too hot. Thought I noticed a very slight bulge on one of the small capacitors on the board. May be off base, but everything else checks good to my knowledge which may be questionable.
              Last edited by boman; 07-27-2019, 06:46 AM. Reason: Additional info

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              • #8
                A bulge on a cap is usually a kiss of death for the cap.

                jeff.
                http://www.applianceaid.com/
                Appliance Repair Aid

                Comment

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