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TDK VYK3637 SMPS Power Supply

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    TDK VYK3637 SMPS Power Supply

    Hi
    I've got a couple of these that need some attention.
    One powers up the machine but cuts out after a while.
    The other one doesn't power up at all.
    I'm sure it's only a couple of components causing it ,hopefully.
    I've recapped both of them. One worked after ,the other one didn't. I want to keep the repairs cheap as I'm trying to sell the machines they go into.
    Would anyone be able to give me a rough estimate on the cost.
    Im in the london area.
    Anyone have any recommendations for repairs in the the area.
    Ive contacted a couple already just waiting for a reply.
    Any experts on the machines they go into would be welcome too.
    They are Panasonic M11 AU62 and AU65.
    Thanks

    #2
    Re: TDK VYK3637 SMPS Power Supply

    Please post a picture of both sides of the circuit board in question we might be able to help you figure out what could be going on with it
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment


      #3
      Re: TDK VYK3637 SMPS Power Supply

      Here are some images of one of the power supplies.






      image uploader



      Last edited by Carm99; 05-01-2022, 01:01 PM. Reason: Forgot some images.

      Comment


        #4
        Re: TDK VYK3637 SMPS Power Supply

        there is a tiny cap with black marker on top you didnt change - it's most vulnerable from heat

        Comment


          #5
          Re: TDK VYK3637 SMPS Power Supply

          Thanks I'll change that.
          What I really need is a tech to look them over and test them.
          See what's going on with them.
          Cheers.

          Comment


            #6
            Re: TDK VYK3637 SMPS Power Supply

            where are you located?
            shepards bush?
            totenham ct road?
            i am assuming your in the tv industry

            Comment


              #7
              Re: TDK VYK3637 SMPS Power Supply

              Hi
              Im in nw10. I'm trying to get them powering properly at least to sell them on.
              Thanks.

              Comment


                #8
                Re: TDK VYK3637 SMPS Power Supply

                harlsden / hanger lane?

                Comment


                  #9
                  Re: TDK VYK3637 SMPS Power Supply

                  Hi it's more Willesden.
                  I can't do much at the moment. I just wanted to find out if anyone could test them ,check them out. I doubt it's something major. Hoping it weren't too much to fix and that kind of thing.
                  Cheers.

                  Comment


                    #10
                    Re: TDK VYK3637 SMPS Power Supply

                    i'll pm you later - i'm *very* close!
                    i could look at the psu's
                    dont know about the decks though - are they DigiBeta or something?

                    Comment


                      #11
                      Re: TDK VYK3637 SMPS Power Supply

                      M11 they are.
                      Thanks.

                      Comment


                        #12
                        Re: TDK VYK3637 SMPS Power Supply

                        Hi again.
                        I sold one of the MII machines. Buyer wanted to repair it himself.
                        I’m left with the one that doesn’t power up at all.
                        Cheers

                        Comment


                          #13
                          Re: TDK VYK3637 SMPS Power Supply

                          I pulled 2 rectifiers (B92M) out so far to test them ,and got an extra reading on one of them. Any ideas.?
                          Thanks


                          Last edited by Carm99; 05-10-2022, 06:10 AM. Reason: Wrong description

                          Comment


                            #14
                            Re: TDK VYK3637 SMPS Power Supply

                            I removed another B92M and got the extra reading on that one too.

                            Comment


                              #15
                              Hi
                              Does anyone know if there are replacements for the Low Loss Super High Speed Rectifier.....ESAB92M-02 200V 5A------ ESAB92M-02N 200V 5A------ ESAC92M-03 200V 10A

                              Cheers

                              Comment

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