Nord Grand 2 Key Noise Issue

[MH282]

Hey,

I got my hands on a Nord Grand 2 and I love the Instrument. But i noticed an issue with a "plastic" noise with a G key (the one below middle C). It didnt Sound as soft as the others when releasing fast.

I opened the case and saw that exactly at this Spot there is some plastic holding cables from keybed to the platine. Does anybody else have this issue? Is it a production fault and the plastic thing was mounted at a wrong spot, directly under the counter weight of the key? Each time the key is released fast it touches the plastic and makes a bad sound...Anybody has a suggestion how to Deal with that?

Best regards!

P.S. I saw the same at the Post of the dissambly Guide to the nord grand viewtopic.php?t=19178
So maybe it is an issue with all Grands? Maybe somebody with a Nord Grand or Grand 2 can confirm.

[Schorsch]

I would try to carefully remove the cable holder (it’s adhesive) and re-fix it a bit more away from the keybed?

[ziozeus]

Sorry can't help on this. But out of curiosity, can you confirm that metal counterweights are marked W2? (Should be visible in the opposite side of your photo)

[MH282]

I would try to carefully remove the cable holder (it’s adhesive) and re-fix it a bit more away from the keybed?

Thanks for the idea, i was thinking about it but afraid that i lose warranty if there are other issues and I've "manipulated" the product. I just dampened it with a small strip of felt for now and it's better and almost no difference to the other keys. But i think it's either not a good design from Nord if its happening on all Grands (2) or bad quality control if they didnt notice.

Sorry can't help on this. But out of curiosity, can you confirm that metal counterweights are marked W2? (Should be visible in the opposite side of your photo)

Sorry I already assembled the instrument again. What would it mean if they are marked with W2? Maybe i can have a look if I do decide to change the position of the cable holder.

[ziozeus]

Kawai RH3 graded action has 4 levels of weights.
W1 W2 W3 W4, being 4 the lightest.
Nord grand 1 is not graded and uses W3 all across the 88 notes.
From what I get from reviews, Nord grand 2 has a havier acrion but again not graded.
I'm curious to have a confirmation that NG2 uses W2 keys (or maybe a combination of W2 and W3?).

[M_a_c]

I got this "effect" at my workbench on a Studiologic NUMA-X-73 too, where the "cable-holder" was installed in the Hammer-Way also and causing some noise. Interesting that this happens to be the same keybed manufacturer...

[MH282]

I got this "effect" at my workbench on a Studiologic NUMA-X-73 too, where the "cable-holder" was installed in the Hammer-Way also and causing some noise. Interesting that this happens to be the same keybed manufacturer...

In the Nord the keybed is a modified Kawai Version bjt i guess the decision for the positioning of the cable holder is from Nord. Could you fix it for your Instrument and how?

[M_a_c]

In the Nord the keybed is a modified Kawai Version...

Ah... Yes... You´re right... Mea culpa... We´re about the Nord Grand... I just got the NSxCompact in mind... Sorry...

[MaybeANord]

Thanks for the idea, i was thinking about it but afraid that i lose warranty if there are other issues and I've "manipulated" the product. I just dampened it with a small strip of felt for now and it's better and almost no difference to the other keys. But i think it's either not a good design from Nord if its happening on all Grands (2) or bad quality control if they didnt notice.

This is something I’ve noticed on my Grand 2, but at F above middle C…

Edit: this reminds me, there are two revisions. I have a Rev B. Is yours Rev A or B? I suppose it is possible there was an internal redesign resulting in a different position for these components.

Edit 2: I think I am mixing up the Rev with the Piano 5. I definitely hear this rubbing sound at F though.

[TomR99]

I ran into essentially the same problem with my new Nord Grand 2: the G3 and Ab3 keys started to clack VERY loudly after playing the new instrument for ~1 day. Thanks for the photo and the link to the disassembly guide.

In my case, after I opened the cover, I noticed a minor difference:
The ribbon cable had no 'cable holder' or raceway clip. However, I can see from your photo that the raceway clip can be quite interference-prone if it's not mounted somewhere away from the key weights.

There are 2 ribbon cables -- one large and the other small. Presumably, the raceway clip in your photo was intended to hold them out of the way.
In my case, I simply pulled both cables as taught as possible away from the key interference zone, and affixed both cables snugly to the chassis floor with a piece of 3M PE foam adhesive tape. The noise has been completely eliminated, and I'm hopeful it will be a reasonably long-term solution.

It looks like there is a small 'hole' in their production quality control -- I don't fault them, as it is very difficult to keep a tight rein on manual assembly processes. However, it was an easy fix from my point of view. It was nice that the designers used one screw head size (Torx T20) for all the fasteners I needed to remove and replace -- that's thinking of human factors for servicing!

I'm happy with the instrument and expect it will be a fine gigging instrument, complementing my practice piano (1929 Steinway Model L).
I've experimented with every major brand of digital pianos, and am returning to Nord after ~15 years. The interface of the Grand 2 is more to my liking than those used on their stage pianos, and I'm more focused on piano-type sounds than other stuff.