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Baratza Sette 270 intermittent/no power repair

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  • Baratza Sette 270 intermittent/no power repair

    I had this Baratza Sette 270 in the shop the other day for an intermittent/no power fault and I could foresee the issue affecting other Sette grinders due to the inherent design so this may be of assistance.

    The complaint was the screen on the front would sometimes flicker but mostly would just be dead and the grinder would not respond to any buttons.

    The cause was a broken leg on one of the two choke coils on the power supply board. These coils hang upside down when the grinder is in use.
    They have no glue or adhesives to secure them to the PCB and the grinder vibrates quite a lot when it runs. The vibration, possibly along with a poor soldering job, allowed the leg to break and touch off to the pad causing the intermittent or no connection fault.

    I resoldered all of the legs and added an extra length of solid core wire to the broken one so it would contact the PCB properly. The coil was then glued in place and glue was added to the other coil to secure it.

    If you are having similar issues with your grinder, have a look and see if yours has done this too. The grinders are all built the same with the coils hanging upside down so it's not unlikely it's happened before and will happen again.

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  • #2
    Originally posted by noidle22 View Post
    The complaint was the screen on the front would sometimes flicker but mostly would just be dead and the grinder would not respond to any buttons.

    The cause was a broken leg on one of the two choke coils on the power supply board. These coils hang upside down when the grinder is in use.

    They have no glue or adhesives to secure them to the PCB and the grinder vibrates quite a lot when it runs. The vibration, possibly along with a poor soldering job, allowed the leg to break and touch off to the pad causing the intermittent or no connection fault.
    Good find and fix noidle!

    Hopefully this helps many. My brother’s grinder had similar symptoms. Be interesting to know how wide spread this issue is. A little DIY design enhancement here and there. [emoji3581]

    Comment


    • #3
      Yes indeed. It must be a common fault. My Settee 270 died suddenly yesterday and I couldn't see anything obviously wrong when I pulled it apart, such as components which had lost their smoke.

      After seeing this post I had a closer look at the choke on the PCB board, and guess what? The left hand choke has a broken leg. Once I've repaired the broken wire I'll epoxy the choke to the board so vibration from the grinder doesn't break the wire again. The right hand choke is wound from heavier wire, so is not likely to break.

      Thanks so much for your post. I wouldn't have spotted that broken wire otherwise.

      Comment


      • #4
        Brilliant, mine died today, and low and behold, same problem. Difficult to see at first, but definitely broken. I’ll have to find my soldering iron and get to it. Thanks again - saved $98 on a replacement board!

        Comment


        • #5
          Hot glue is probably enough the stop the vibration after its repaired. Epoxy might be overkill.

          Comment


          • Dimal
            Dimal commented
            Editing a comment
            Epoxy would definitely make life difficult if future repairs were thwarted by its presence... :-(

        • #6
          Oh my God, wish I saw this topic soon, I have to replace the board for 150USD

          Comment


          • #7
            Magnificent information, my mill suddenly became black and silent! I was ready to buy a new powerboard without being sure of the failure, when I read this information and took a very close look with a magnifying glass, I could notice the failed coil. The repair was not easy with a soldering iron, but I finally succeeded! Thank you for the savings in purchasing. Your explanations are very clear!
            I think to protect these welds from future vibrations with a little silicone or epoxy on the lugs of the coils.

            Comment


            • #8
              If this was a car there would be a recall why the double standard for these units - - surely lack of caffeine can be classed as a life threatening hazard

              Comment


              • roosterben
                roosterben commented
                Editing a comment
                If it was a car it would be lost in a miasma of lack of lemon laws and consumer rights in Australia and eventually resold by the owner who was sick of leaving it a dealer for weeks with no resolution or agreement of the problem.

            • #9
              Well sorted out Noidle. Makes me think Baratza engaged in some quick and dirty electrical design here. For a few $ more they could have put the coils in a rigid insulated case anchored to the board to avoid that mode of failure. I wonder how much thought goes in electronic design to ensure failure free operation. I can only assume some brands are better than others in this regard.

              Comment


              • #10
                Originally posted by noidle22 View Post
                I had this Baratza Sette 270 in the shop the other day for an intermittent/no power fault and I could foresee the issue affecting other Sette grinders due to the inherent design so this may be of assistance.

                The complaint was the screen on the front would sometimes flicker but mostly would just be dead and the grinder would not respond to any buttons.

                The cause was a broken leg on one of the two choke coils on the power supply board. These coils hang upside down when the grinder is in use.
                They have no glue or adhesives to secure them to the PCB and the grinder vibrates quite a lot when it runs. The vibration, possibly along with a poor soldering job, allowed the leg to break and touch off to the pad causing the intermittent or no connection fault.

                I resoldered all of the legs and added an extra length of solid core wire to the broken one so it would contact the PCB properly. The coil was then glued in place and glue was added to the other coil to secure it.

                If you are having similar issues with your grinder, have a look and see if yours has done this too. The grinders are all built the same with the coils hanging upside down so it's not unlikely it's happened before and will happen again.

                [ATTACH=CONFIG]25174[/ATTACH] [ATTACH=CONFIG]25175[/ATTACH]
                Amazing find and thank you! saved my friends grinder from a costly repair.

                Comment


                • #11
                  I have seen a lot of coils like that on printed curcuit boards and are are almost always glued down like Noidle did. Suggests sloppy engineering by Baratza . They need to be sorted out by Breville.

                  Comment


                  • #12
                    Now that Breville has brought Baratza all these reliability issues should become a thing of the past!!!!!!!

                    Maurice

                    Comment


                    • #13
                      I signed up to this forum just to thank you all. My choke had worked its way loose too, same one as OP but different leg.

                      I initially opened up the case to check fuses and blown caps but saw nothing. Put the case back together (of course...) And then found this post. I could only tell one of the choke legs was loose by wiggling!

                      Resoldered and added a slug of hot melt. Good to go!!!

                      The worst part of all this was that I had to do it without any coffee ??

                      Cheers OP and everyone else!

                      Comment


                      • #14
                        Originally posted by Birkin7 View Post
                        Now that Breville has brought Baratza all these reliability issues should become a thing of the past!!!!!!!

                        Maurice
                        Ooh that's interesting, didn't know that! I do hope the next iteration will be quieter and also grind for filter.

                        Comment


                        • #15
                          Hi, I have a Sette 270W that is dead as in no display or lights, connecting to 220V does nothing.

                          I want to measure if the PSU is functioning, how do I do that. Which points on the PCB should I measure? And is the PSU AC or DC at the outlet for the display, I would think it is DC to the LCD assembly and AC to the motor?

                          Comment

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