Stephen Selby Posted May 6, 2019 Share Posted May 6, 2019 I need to access the action board of a 1910 Wheatstone McCann octagonal Duet with 81 buttons. From the back I can just see two medium screws securing the wrist block. So to access the action board, do I just unscrew the group of tiny screws on the metal ends? Any other advice from those who have done this? Link to comment Share on other sites More sharing options...
Geoff Wooff Posted May 6, 2019 Share Posted May 6, 2019 (edited) No, undo those medium screws on the inside face of the pallet board that go through into the hand rails . There will be another one or two screws that secure the hand rails to the end plates so the rails should stay in place when you lift off the metal ends . Edited May 6, 2019 by Geoff Wooff Link to comment Share on other sites More sharing options...
Stephen Selby Posted May 10, 2019 Author Share Posted May 10, 2019 Thank you for your advice, Geoff, which was spot-on, of course! On examining the action board, I find that it may have warped slightly, with the result that two or three key pegs have risen above the peg-holes so that they stick when pressed down. The solutions seem either (a) to build up the pad a bit, so that the key peg rests lower into the peg holes, or (b) to bend the lever arm to let the key down. Any advice would be welcome. Link to comment Share on other sites More sharing options...
Geoff Wooff Posted May 10, 2019 Share Posted May 10, 2019 Restorers would probably bend the lever arm a little but you may find putting a leather or cardboard spacer between the lever end and the pad is less invasive. I would not normally expect that a warped end would cause the keys to lift out of their location holes but on an 81 key McCann I can imagine it. Good luck. Link to comment Share on other sites More sharing options...
Mike Acott Posted May 12, 2019 Share Posted May 12, 2019 The most likely cause of your problem is the pads have become compressed over tome , so the right cure is to r.eplace all the pads with new ones made of the right materials. Link to comment Share on other sites More sharing options...
Stephen Selby Posted May 12, 2019 Author Share Posted May 12, 2019 I shall try it and let you know. The pads were replaced only five years ago. But where I live, the climate might have affected them. There's only a problem with three or four out of 81! Link to comment Share on other sites More sharing options...
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