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Chester V20 Mill Drive Board Died

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Chester V20 Mill Drive Board Died

Home › Forums › Electronics in the Workshop › Chester V20 Mill Drive Board Died

Viewing 8 posts - 1 through 8 (of 8 total)
  • Author
    Posts
  • 15 September 2020 at 19:06 #496003
    Peter Bell
    Participant
      @peterbell11509

      A friend has a Chester champion 20V where the board has died and pops the fuse.

      I seem to remember some posts about similar problems but cannot find them. The boards are out of stock at present from Chester and I wonder if anyone knows of a repairer or has repaired one with simlar problems?

      Peter

      board-1.jpg

      board-2.jpg

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      15 September 2020 at 19:06 #32138
      Peter Bell
      Participant
        @peterbell11509
        15 September 2020 at 20:04 #496012
        roy entwistle
        Participant
          @royentwistle24699

          A photograph of the back of the board might help if possible

          15 September 2020 at 21:55 #496028
          Steve F
          Participant
            @stevef

            Hello

            I had a similar problem about 5 years ago. Thinking it was the SCR's on the board that had gone that's SCR 1 & 2 on the left of the photo. I could not find a problem with them so suspected something more serious like the chip.

            I gave up and ordered a new board. £70 i think. This got the mill working.

            Having more time i took another look at the board and i found the problem.

            That great big Black power resistor top left had gone open circuit. 15K tested open circuit. It looked fine. No burn marks so did not look like it had overheated.

            I'd have that out and give it a test first

            regards

            Steve

            17 September 2020 at 15:02 #496329
            John Rudd
            Participant
              @johnrudd16576

              Peter,

              pm sent.

              if you want to contact me via pm about the board, maybe I can help with a test and repair ?

              17 September 2020 at 15:56 #496339
              Circlip
              Participant
                @circlip

                Was trying to remember John Rudd's name. He's the man.

                Regards Ian.

                17 September 2020 at 21:51 #496406
                oldvelo
                Participant
                  @oldvelo

                  Hi Peter

                  please make sure that the controller is set up to match the motor. John will be able to help you with this task

                  Eric

                  18 September 2020 at 07:35 #496428
                  Peter Bell
                  Participant
                    @peterbell11509

                    Thanks everyone. We found some of the diodes are short circuit so we have some on order and are going to change these.

                    Many thanks John for offering the repair service–thought I had heard of somrthing like that before which is why I posted–you may be needed yet!

                    Peter

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