[sdiy] [OT] Yamaha PF-85 question

cheater00 . cheater00 at gmail.com
Mon Jul 20 11:14:43 CEST 2015


Difficult to tell without seeing the action. Do you have any images?

On Fri, Jul 10, 2015 at 3:25 PM, Pete Hartman <pete.hartman at gmail.com> wrote:
> They don't get *stuck* but they are slow to return to their resting
> position.
>
> Pete
>
> On Fri, Jul 10, 2015 at 3:01 AM, cheater00 . <cheater00 at gmail.com> wrote:
>>
>> What does mushy mean? Do they get stuck?
>>
>> In my fatar, there were metal pieces protruding into the key, to stop
>> it at the end of the travel. They had rubber coating. This rubber
>> swelled up and became thick enough that the keys got stuck.
>>
>> On Sun, Jul 5, 2015 at 7:09 PM, Colin Hinz <lists at meccanion.com> wrote:
>> >
>> > I've got a (positively antique) Yamaha digital piano with a vexing
>> > problem: several keys have gone mushy, with no apparent cause.
>> > Presumably there's something amiss with the key return springs,
>> > but swapping springs with a good note just results in both keys
>> > being mushy!
>> >
>> > Given that this beast has almost no value at this point, I don't
>> > want to put huge amounts of time or money into it, but I'm
>> > loath to just throw away what could still be a working instrument.
>> > (I'm sure I'm not the only list member who's been in this
>> > position.)
>> >
>> > So, throwing this out to the list, anything simple I'm missing?
>> > The service manual just covers the electronics, the only page
>> > regarding the keyboard itself is the exploded parts diagram.
>> >
>> > And furthermore, as this is off-topic for synth-DIY, is there
>> > a more appropriate place to ask about this problem?
>> >
>> > Thanks for any insights, everyone.
>> >
>> > - Colin
>> >
>> >
>> > ---
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