From being dropped. Can anyone point me to diagrams showing how these keys are locked in place at the pivot, believed two pieces of plastic broken away and missing and not knowing how to safely remove one of the other keys, to inspect the arrangement, i'm at a bit of a loss. It has been used for some time like that with only the top wooden plank and felt under keeping it in place. It is in for electronic repair of a blown amplifier but may as well do something with this key while it is all open.
Yamaha P120, electric piano, broken key
Mar 15, 2010
4 Replies
If you can't figure out how to remove a key you might as well hang it up.
can't point you to a diagram but i can describe what yamaha usually do to retain keys in (i'm asuming this is a weighted piano) what i usually do is undo the screws holding the keyboard and slide it forward about an inch then bend over the piano and look underneath the keyboard from behind the keys you might be able to see/feel little plastic tabs on the bottom of the keys lift the plastic key up with a small screwdriver and slide the key out forwards it should just come away assuming its the same as the other yamahas ive done all the best the (ex)keyboard doctor
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The very top key was always a bit sticky (if i made it worse , the owner was always compensated for this key) and as I could see the edge, removed that one, quite painlessly. Screwdriver blade softened with some plumber's PTFE tape under the top/rearmost projection (under the plank/felt)and lifted and then slid forwards to remove. Draped some PTFE in the pivot area recess and took a cast with epoxy that now seats in the broken one to make a reinforced hotmelt glue fix to that one. Anything special about the libricant at the plastic/plastic pivot , looks like a green silicone paste
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
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Correct X,Y,Z position and action inditinguishable from the adjascent keys and rubbing/stickey top one fixed at the same time
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