Technical problems and their resolution

Keys sticking on the repetition lever

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Started by

aldo1521

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Opening post by aldo1521

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11
City
Arezzo

Hello everyone,

I own a Yamaha G2 grand piano that I need to have tuned in the month of April.

While I'm at it, I would like to have a few small things fixed:

- Some keys suddenly stick when I play repetitions and do not sound.

- One string does not hold its tuning. In fact, after a few days from the last tuning, it could already be heard that it was slightly out of tune.

At this point, I ask you:

- How should the technician proceed to resolve these problems? Are these minor issues or are they complicated to solve?

- And then, since I purchased the piano 3 years ago and have never had a mechanical regulation done, could it be worth doing? I should mention that I don't really know what it consists of and if it could be linked to the repetition problem.

Thank you for your answers.

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Reply 2 by giovannig

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514
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Monza

Well, the refurbished ones (I assume it's 'refurbished') more or less all have problems maintaining optimal tuning; however, you can always try changing the loose hammer felt of the note that bothers you most. After 3 years, a normal regulation check should suffice without disrupting the piano. But do you think the keys break with repetition... It could be that the repetition levers cannot return under the roller, either because the pins are stiff or because their positioning under the rollers is incorrect. So I would perform a check of these pre-regulations, including the height of the repetition lever, then a general regulation check and the replacement of loose hammer felts, followed by tuning. These are things that can be resolved, even simple ones, but the technician must have the time to work on them, so the cost increases accordingly.

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Reply 3 by aldo1521

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11
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Arezzo

First of all, thank you.

My piano is not refurbished and the tuning problem, as I was telling you, is only on one note.

So what exactly should I ask the technician to get a cost estimate? A check of the mechanics?

One more thing:

- what could be the reason that I cannot play piano (softly) on the bass notes?

Thanks again

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Reply 4 by Celibidache

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201

When was the last time you tuned the piano?

If it hasn't been tuned for months or years, it is difficult to determine beforehand if the tuning pin is loose... You have to feel it.

In any case, it is a routine job, although for these problems technicians tend to divide into two categories:

those of "there's no problem: we'll change the string and the pin" and those of "eeeh... let's see... let's try... maybe over time it will settle...".

With the former, you solve the problem at its root; with the latter, you will always be left with a out-of-tune note after two fortissimos.

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Reply 5 by aldo1521

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11
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Arezzo

The piano was tuned a little less than a year ago.

Just one week after the tuning, I could already hear that note out of tune, so much so that the technician came back to tune it again.

After three days, we were back to square one.

And regarding the problem with the repetition action sticking on some keys and the inability to play soft notes (piano) in the bass, what should I ask the technician to get a quote?

Thanks again!

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Reply 6 by Celibidache

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201

Regarding the tuning, generally speaking, these are things that can happen even on new concert grand pianos...

One needs to see and hear it to evaluate what it really is.

As far as the action is concerned, some images would be helpful. In words, it can be anything and its opposite...

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Reply 7 by giovannig

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514
City
Monza

But what does the technician who tuned it a year ago say? I believe that he, more than anyone, knows how the piano is doing.

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Reply 8 by pianoexpert

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3,876
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rocca di papa

The suggestions from giovannig and Celibidache are, naturally, quite correct. I would add that those ankle(s) that do not hold can be tapped, with caution. Just check the level of the repetition lever in relation to the escapement hammer. Also check if any escapement hammer is a bit lazy. The technician will evaluate. A good regulation will give you back the "pianissimo!". Tuning and control of hammer voicing (perhaps by reconstructing the "pianissimo cushion")

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Reply 9 by aldo1521

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11
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Arezzo

The technician simply limited himself to retuning the note, he didn't do anything at all.

At this point I would like to follow your advice, but I need a capable and honest technician who can do similar work.

Honestly, I have already contacted a technician in my area and I did not get along well at all.

I am therefore asking if you can recommend, even via private message, the name of a technician who can perform an assessment and eventually the work, in the province of Arezzo or Florence.

I would be grateful to you.

Thank you all.

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Reply 10 by pianoexpert

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You have to look for it yourself. By contacting him and speaking with him at home, ask him to detail the solutions he wants to adopt; you will see that you will find a person you can trust. Unfortunately, we cannot suggest anyone.

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Reply 11 by aldo1521

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11
City
Arezzo

Ok thanks, I will try to contact someone.

I'll take this opportunity to ask one last thing given your availability:

As I was telling you, I have some trouble playing the piano, especially in the bass.

I also have the impression of having a somewhat heavy keyboard, in which I cannot be as agile as on other pianos I play on.

I am therefore asking you if making a keyboard more agile and at the same time being able to play the piano are two compatible things.

And above all, how does one lighten the keyboard to allow for greater agility?

Thanks again.

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Reply 12 by giovannig

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514
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Monza

Has the hammer rail been replaced on this piano? It seems strange to me that there is all this weight on a G2; generally, it is not among the pianos with the heaviest keyboards, so we need to understand if the keyboard was previously relaid, due to a change of hammer rail for example, or for specific requests. Without photos, it's just speculation and it is difficult to give answers.

Aparte the weight, a regulation of the action, starting from scratch at this point and re-verifying all parameters, should solve the problem.

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Reply 13 by Andry

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86
City
Roma

What Giovanni wants to tell you is that there is a direct relationship between keyboard weight and the ability to play piano and pianissimo; however, on a new piano, this is slightly unusual. Any capable tuner will be able to at least answer your question. In the meantime, if by chance the piano is in a humid place or has been kept closed, let's open it and air it out a bit; it's true that dust is bad, but excess humidity is the real enemy of the piano (obviously too dry conditions and fluctuations also play an important role, and in three years they could have already had an effect).

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Reply 14 by giovannig

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514
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Monza

But I didn't understand, I don't think the piano is new, is it a G2 or not? Anyway, it doesn't matter much, the episode of the repetition pedal not working certainly also suggests some small problem with the pins, as has already been suggested. So everything needs to be reviewed a bit more.

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Reply 15 by aldo1521

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11
City
Arezzo

So the piano is not new, based on the serial number it should be from the early '90s.

The action is original and in good condition.

Before I bought it (3 years ago) it has been practically stationary most of the time and I don't think the seller who sold it to me performed any major maintenance work.

Good at selling, because he keeps prices low, but certainly not as a technician.

If the problem isn't too much weight, could there be a friction problem?

If so, how are they measured?

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Reply 16 by giovannig

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514
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Monza

Evaluating the weight of the descent and the ascent could be a first step to understanding how much friction affects it. Then they must be identified, obviously.

For the "how-to," I refer you to Paolo's video tutorials.

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Reply 17 by giovannig

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Monza
aldo1521 wrote:

So the piano is not new; based on the serial number, it should be from the early '90s.

Not to sound like someone who doesn't trust [the numbers], but I have seen Yamaha serial numbers where 1 million turned into 4 million, so I almost never refer to the serial number.

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Reply 18 by pianoexpert

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rocca di papa

I agree, Giovanni, always check. It is right to review a bit of everything and I agree regarding the excessive lowering weight. In short, it is now a widespread and "contagious" idea that one must verify the friction of the mechanics and then check the two weights in question (lowering and return!). If you do not have the appropriate little tool, adjust using the screw of the flange: the friction is correct if the flange "falls" gently and uniformly under its own weight. This applies to the flanges of the hammers and the jacks. The escapement uprights must fall under their own weight (released from their respective springs).

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Reply 19 by aldo1521

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11
City
Arezzo

Ok I understand, it is certainly better to discuss the matter with the technician; I can take the measurements but then I wouldn't know where to start.

Thank you for your suggestions.

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Reply 20 by HansElzinga

Posts
31

To improve the string that goes out of tune, you could tap it (with care) using a screwdriver and hammer against the bridge pins and tap the string end against its pin. This stops the string against the pins and helps you hold the tuning better.

As for the other problem, a general regulation of the mechanics is required. This work can be done in two or three hours, so it shouldn't cost much.

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