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Baratza Sette 270 intermittent/no power repair

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  • #16
    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]
    Kudos to you noidle22.
    Disaster this morning waking to non functioning grinder with intermittent power to the display board.
    I read the baratza troubleshoot but these pics are worth far more.
    Unfortunately my faulty connection was between the coils at the back but I had a small soldering tip that just fitted in and was able to deposit enough solder to make the connection !

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    • #17
      Originally posted by Esbndk View Post
      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?
      Check the fuse and inspect the coil posts. Thats all the baratza guide says.

      Comment


      • #18
        Originally posted by lakeman View Post

        Kudos to you noidle22.
        Disaster this morning waking to non functioning grinder with intermittent power to the display board.
        I read the baratza troubleshoot but these pics are worth far more.
        Unfortunately my faulty connection was between the coils at the back but I had a small soldering tip that just fitted in and was able to deposit enough solder to make the connection !
        That's interesting, I didn't know Baratza had an in depth electrical test guide which actually mentions this issue as something to check. Obviously they know it's a problem, I wonder if they have done anything to address it.

        If anyone sees this who owns a new Sette series grinder and feels like taking it apart, I'd be interested to know if they have glued down the coils or reinforced them in some way.

        Comment


        • Lyrebird
          Lyrebird commented
          Editing a comment
          I can confirm that my 270Wi, less than 2 years old and itself a warranty replacement for the 270W that died, has the same hanging coils with no support.

          It has just developed the intermittent display fault and indeed one of the coils has broken loose from its moorings.

        • noidle22
          noidle22 commented
          Editing a comment
          That's concerning that they knew of the problem yet failed to address it. Breville are in control now, still waiting to see what happens next.

          What I don't understand about the general opinion towards Baratza elsewhere online is that everyone who has issues which are remedied by Baratza are quick to praise them for such good customer service, which I can support, yet few seem to consider that if they actually built things to a higher standard in the first place, there wouldn't be so many problems. It does seem to be the Sette series at the forefront though, the rest of their range appear to do ok.

        • Chilllilal
          Chilllilal commented
          Editing a comment
          I received a new powerboard in April. Can confirm they were re-enforced with glue in the front, but not the back. I still have intermittent power issues. I suspect back coils are not connecting well, but it’s hard to see/reach

      • #19
        Hi,
        I noticed, after 2 months of using, that my Sette sometimes lost power during grinding, slow down spin or even stopped working. I stared looking for the reason and then I found this topic. My choke coils were fine and secured by hot glue, but I found out that the two wires which supply the power to the motor are lose. I tightened them by pliers and my Sette works as new one

        Comment


        • #20
          I signed up to this forum to say that's for the hot tip - I would have never figured this out.

          I had a broken leg at the back and after a couple of hours faffing around trying to solder in an impossibly small space, I ended up melting solder on all four legs and pulling the unit off, un-wrapping the coil to make a new leg and re-soldering back to the board.
          This is my first ever foray into soldering onto a circuit board so I'm stoked that it worked.

          I also managed to snap of one of the connectors to the hopper switch the two wires that used to go into it are now permanently connected!
          Hopefully my kids don't grind their fingers.

          Comment


          • #21
            hi thanks soo much signed up to thankyou for the repair info noidle22..

            Resoldered the choke coil, as pictured above 'LF1' extended rejoined wire ,horribly fiddly, added a dab of silicone to support component,and LF2 choke.

            Also found the negative to the motor capacitor had NO SOLDER ON JOIN,,just twisted together not seeminly causing an issue...yet, very poor QC from the factory,(will try figure how to upload pics of repair..)

            thanks again for the advice back drinking coffees..

            Comment


            • Lyrebird
              Lyrebird commented
              Editing a comment
              The motor in the Sette is a universal AC / DC type so the capacitor is for spark suppression / noise reduction. The motor will run without it.

            • Lyrebird
              Lyrebird commented
              Editing a comment
              I think I was wrong here: I had another look at the motor drive and there's a bridge rectifier hidden under the sub board. This would make the cap a smoothing cap for the DC supply to the motor.

          • #22
            well....bugger.
            My first sette 270WI lasted about 18mths of light use and the load cell broke, luckily i purchased a standard a 270 front facia and turned it into a Sette 270 and onsold it.

            My SECOND 270 had the exact same symptoms as above after 14mths of use. i just got jacked of paying $650ish for a decent grinder and only just getting over 12months out of it.
            I replaced the fuse but it would blow so i whipped it out and bought a niche. So disappointing as i really like the sette, the workflow etc. just the longevity was rubbish!

            ohhh if only i knew how to fix it i could of onsold it too haha

            Comment


            • #23
              Thanks for this post! This will save me some time and money as well. I have a refurbished Sette 270 that I've had since July 2018 and it has been problem free until it just cut out in the middle of grinding this week. Sure enough, the front leg on the same choke coil is broken, will have a crack at re-soldering to repair and strengthening with hot glue this weekend.

              Comment


              • abqaussie
                abqaussie commented
                Editing a comment
                Confirmed, it was just the front leg wire on the choke coil exactly as shown in the image on the original post, I was able to reheat the solder joint, push the snapped wire down firmly into it, and let it set up, then hot glue to strengthen things and I am back in business.
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