Need help identifying transformer

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  • EasyGoing1
    Shock Therapist
    • Sep 2016
    • 977
    • USA

    #1

    Need help identifying transformer

    Hello,

    I have a soldering re-working station ... an Amazon - el-cheapo - heres a pic:



    and the transformer suddenly decided to go into melt down mode (literally let the smoke out of the transformer) ...





    Unfortunately, all of the print on the transformer is in Chinese:



    Just for giggles, I decided to throw a volt meter on it to see what I'm getting on each of the three taps when 120 is applied to the main (the taps with the highest resistance), and I think the meltdown did it in, because the readings I got were as follows:

    Yellow leads: .7 Vac
    Red leads: .8 Vac
    Black leads: .4Vac

    Obviously these couldn't be the proper voltages as they would hardly operate a re-working station.

    Can someone please help me identify this transformer so I get purchase a replacement?

    Thank you,

    Mike Sims
    sigpic
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6037
    • USA

    #2
    Re: Need help identifying transformer

    Here is what I would do on the top of transformer where the secondary winding are carefully take off the yellow tape until you see the wire you may find a thermal fuse in there or in the primary winding there maybe on it that you can by pass it to see if it still works if it dose there are some thing you can do

    Check the secondary winding with an ohmmeter and see if it has any reading at all on any wire if so then go head and try what I was talking about earlier
    Last edited by sam_sam_sam; 11-04-2016, 03:21 PM.

    Comment

    • keeney123
      Lauren
      • Sep 2014
      • 2536
      • United States

      #3
      Re: Need help identifying transformer

      Can't read chinese but I think this is your replacement.

      http://www.ebay.com/itm/like/1515315...&ul_noapp=true

      Comment

      • mikey5791
        Badcaps Veteran
        • Dec 2014
        • 514
        • Malaysia

        #4
        Re: Need help identifying transformer

        The chinese writing are not that important; the first row means "Approved" while second row says the input/Tested at 110V and the last row is production date which is November 2015.

        You should follow sam_(x3) advice : try carefully peel off the yellow tape and see if you can find a thermal fuse, if it is burnt you might as well replace an equivalent type or else buy a new replacement transformer. Good luck then.

        Comment

        • kc8adu
          Super Moderator
          • Nov 2003
          • 8832
          • U.S.A!

          #5
          Re: Need help identifying transformer

          bet you have a short on one of the secondaries.
          thermal fuse may have caught it in time.
          you might be able to bypass fuse for a TEST ONLY and run it disconnected.if it gets hot its toast pardon the pun.
          look for shorted diodes,ect.seen bad heaters do this in cheap stations too.
          fuse is in the primary side.bottom section.
          Last edited by kc8adu; 11-06-2016, 08:58 AM.

          Comment

          • sam_sam_sam
            Badcaps Legend
            • Jul 2011
            • 6037
            • USA

            #6
            Re: Need help identifying transformer

            Originally posted by kc8adu
            you might be able to run it disconnected if it gets hot its toast .
            I have seen a few transformers do the with no load on them with in a few minutes it would get so hot that you could not touch it if this is the case do NOT use it any more
            Last edited by sam_sam_sam; 11-06-2016, 12:22 PM.

            Comment

            • EasyGoing1
              Shock Therapist
              • Sep 2016
              • 977
              • USA

              #7
              Re: Need help identifying transformer

              Originally posted by sam_sam_sam
              I have seen a few transformers do the with no load on them with in a few minutes it would get so hot that you could not touch it if this is the case do NOT use it any more
              When I plug it in, it starts to smoke within a few seconds.
              sigpic

              Comment

              • EasyGoing1
                Shock Therapist
                • Sep 2016
                • 977
                • USA

                #8
                Re: Need help identifying transformer

                Originally posted by keeney123
                Can't read chinese but I think this is your replacement.

                http://www.ebay.com/itm/like/1515315...&ul_noapp=true
                Thank you ... the cost of the transformer with shipping is almost as much as buying a new unit... ill keep looking around and see what I can find. If I can get the output voltages, I might have one laying around that will work.
                sigpic

                Comment

                • keeney123
                  Lauren
                  • Sep 2014
                  • 2536
                  • United States

                  #9
                  Re: Need help identifying transformer

                  Originally posted by EasyGoing1
                  Thank you ... the cost of the transformer with shipping is almost as much as buying a new unit... ill keep looking around and see what I can find. If I can get the output voltages, I might have one laying around that will work.
                  Henry Ford would be proud of them. Sell the unit at a cheap price and make your money off of parts.

                  Comment

                  • stj
                    Great Sage 齊天大聖
                    • Dec 2009
                    • 30985
                    • Albion

                    #10
                    Re: Need help identifying transformer

                    i have not seen those fail before.

                    as i cant see any of the damned pictures because they arent uploaded to the forum, give me the station model number.

                    maybe it can be bodged with a 24v toroid.

                    Comment

                    • EasyGoing1
                      Shock Therapist
                      • Sep 2016
                      • 977
                      • USA

                      #11
                      Re: Need help identifying transformer

                      Originally posted by stj
                      i have not seen those fail before.

                      as i cant see any of the damned pictures because they arent uploaded to the forum, give me the station model number.
                      Can you see these links and click on them? They are links to the images.

                      Unit Face
                      Transformer 1
                      Transformer 2
                      Transformer 3

                      But just in case, the model is a 862D

                      sigpic

                      Comment

                      • EasyGoing1
                        Shock Therapist
                        • Sep 2016
                        • 977
                        • USA

                        #12
                        Re: Need help identifying transformer

                        Here, I think I got them uploaded now...
                        Attached Files
                        sigpic

                        Comment

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