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Hamburg Steinway B – Top Lid Stuck

  • 1.  Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-16-2026 18:28

    Hi everyone,

    I have a client with a Hamburg Steinway Model B where the main top lid is completely frozen and will not open.

    The piano was moved last year and had not been serviced for years prior to my visit last November 2025. I am servicing it for the third time this Thursday, and need to get the lid open for cleaning.

    I suspect the rubber bumpers may have fused to the finish, but I am also considering a bound hinge pin from the recent move.

    Am I missing something? Hidden lock? Does anyone have recommended techniques or specific tools for this?



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    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
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  • 2.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-16-2026 19:59

    It's possible that the hinges got bent, causing excess friction in the cover catch. Perhaps if you can get in there and loosen the screws on the female side of the catch it will come loose. If you can't get in there, maybe a drop of lubricant. Pulling the hinge pins might do the trick as well, then putting them back in after the cover catch has been cleared.



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 3.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-16-2026 20:20

    Thank you, Steven. Good points. I should bring a low-profile screwdriver this time. 



    ------------------------------
    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
    ------------------------------



  • 4.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 17:44
    There’s also evidence on the prop stick that some kind of liquid was spilled, maybe that was also spilled on the underside of the lid.

    Joe Wiencek
    NYC




  • 5.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 07:41

    As to the rubber buttons, I have also had it happen that (as you surmised) when freed, they bring with them a chunk of the polyester finish. A warning to the owner, in advance, concerning this would be warranted. That hinge looks like it's seen better days so who knows what kind of extremes this thing has been subjected to. 

    Peter Grey Piano Doctor 



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    Peter Grey
    Stratham NH
    (603) 686-2395
    pianodoctor57@gmail.com
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  • 6.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 12:32

    Good call on the polyester finish, Peter. I'll clear that with the owner before I do anything. 



    ------------------------------
    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
    ------------------------------



  • 7.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 12:41

    If the buttons, they may be sliced free safely with a razor blade. Damaged in move with lid attached?




  • 8.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 13:55

    Thanks Paul. If it's not the hinge, I'll try a razor blade on the buttons. 



    ------------------------------
    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
    ------------------------------



  • 9.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 14:48
    Is there a circular thing in the s curve of the piano?   Those larger Hamburgers usually have a lock to prevent the opening of the large lid. 

    If it has the circular thing, spin it, one way or the other and it will let go of the lid.  





  • 10.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-17-2026 15:44

    Thanks Greg. If you are talking about the knob/lid lock button, no, I don't see it there. I have a video from last time, and it's nothing on that spot. It's a model B.



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    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
    ------------------------------



  • 11.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-18-2026 07:33
    Sent from my iPad




  • 12.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-18-2026 07:42

    Elisha, the movers I use routinely turn the lid hinges around so the lid pin receivers face inside the piano when it's being moved. If the piano is laid on its side and the receiver(not sure the technical name) is bent, the lid latch pin at the other end will jam up. Inexperienced movers will do this. Good advice to loosen the receiver at the lid latch pin.

    Stewart



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    Stewart Freedman, RPT
    Freedman Piano Service
    Akron, OH
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  • 13.  RE: Hamburg Steinway B – Top Lid Stuck

    Registered Piano Technician
    Posted 08-20-2026 19:13

    Hi Everyone,

    Thank you all for the insights.

    I returned to the client's house and the lid opened after overcoming some friction. It appears to have bound up over the winter and freed up with the seasonal shift.

    I noticed that the hinge plate wasn't sitting flush against the case, which likely caused the pin to bind. I lubricated it as a precaution, but the root cause is now clear. All other suspected parts turned out to be fine.



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    Elisha Katamura RPT
    Katamura Piano Service
    Fresno, CA
    (559)765-7373
    https://www.katamurapianoservice.com/
    ------------------------------