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Whirlpool washing machine L2158 control board

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    Whirlpool washing machine L2158 control board

    Whirlpool washing machine help determine the resistance r085
    I will be very grateful
    Attached Files
    Last edited by SMDFlea; 01-08-2022, 04:20 PM. Reason: L2158 control board

    #2
    Re: Whirlpool washing machine

    looks like brown black green gold
    1M Ohms 5%

    Comment


      #3
      Re: Whirlpool washing machine

      The board shows 9 MOm
      thank you so much

      Comment


        #4
        Re: Whirlpool washing machine

        how many times did it blow up?
        i'm sure the factory didnt socket the psu chip!

        Comment


          #5
          Re: Whirlpool washing machine

          I don't know how much, and I soldered a socket to make it easier to change later.

          Comment


            #6
            Re: Whirlpool washing machine

            Looks like something blew inside the socket?

            Comment


              #7
              Re: Whirlpool washing machine L2158 control board

              blew in the socket and incinerated an inductor so hard it burned the electrolytc next to it!

              Comment


                #8
                Re: Whirlpool washing machine L2158 control board

                What’s the part number on the IC?

                Comment


                  #9
                  Re: Whirlpool washing machine

                  Originally posted by stj View Post
                  how many times did it blow up?
                  i'm sure the factory didnt socket the psu chip!
                  Sorry, but I just had to

                  Comment


                    #10
                    Re: Whirlpool washing machine L2158 control board

                    The part number is LNK304PN. The socket pin (pin6) that is burnt should not have a connection.
                    The repair kits have other parts that are likely also bad.
                    Last edited by R_J; 01-08-2022, 07:51 PM.

                    Comment


                      #11
                      Re: Whirlpool washing machine L2158 control board

                      Heh. Frying a ¼W 1MΩ resistor by itself tends to need to exceed voltage rating for dielectric strength as well as thermal limits at the same time...

                      Then again, if it fails dielectric strength along the outside, then it'd dissipate less power internally...

                      Comment


                        #12
                        Re: Whirlpool washing machine L2158 control board

                        Originally posted by R_J View Post
                        The part number is LNK304PN. The socket pin (pin6) that is burnt should not have a connection.
                        The repair kits have other parts that are likely also bad.
                        Maybe the IC was inserted the wrong way around or a solder blob... bent pin etc.

                        Comment


                          #13
                          Re: Whirlpool washing machine L2158 control board

                          maybe the chip has the same weakness as TOPswitch's and oscillates itself to death if the startup cap is poor.

                          Comment


                            #14
                            Re: Whirlpool washing machine L2158 control board

                            The pin gap from the package MUST be removed from the socket to.
                            Is removed because of high voltage isolation necessary there and more, with pin removed is easy to not insert the IC wrong.

                            Comment


                              #15
                              Re: Whirlpool washing machine L2158 control board

                              It's not a good idea to socket PWM-FET ICs, because they use the Source/return and Drain leads for keeping the IC cool. In a socket, this won't work and the IC will overheat.

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