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Re: Nord Grand complete disassembly and teardown guide

Postby Beginner » 11 Aug 2020, 22:33

Thanks for the pictures, I was assuming that there is a mechanical reason comming from the keybed to use this shape for the Grand and the Kawais.
However seems its more a design decision which is fine, and obviously it makes sense to use the space to place pcps when available.
Last edited by Beginner on 11 Aug 2020, 22:34, edited 1 time in total.
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Re: Nord Grand complete disassembly and teardown guide


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Re: Nord Grand complete disassembly and teardown guide

Postby Spider » 04 Mar 2021, 13:27

I saw that user "JohannesF" had posted this almost a year ago
I really like my Nord Grand, but I can't get used to the red color and I wonder how great it could look if the sideparts and the top would be in a black grand piano finish. I already have an offer from a professional company which does piano varnishing and now I wanted to disassemble my Grand.

And now I noticed some weird pics in the gallery...it looks like he went on and did it! He didn't post anything apart from the pics so I'll put them here, I think it's an awesome job! We are so used to the all-red of Nords that it looks almost weird...but really classy!

Image
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Image
Image
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Re: Nord Grand complete disassembly and teardown guide

Postby SteveNordP3 » 05 Mar 2021, 01:47

Spider wrote:I saw that user "JohannesF" had posted this almost a year ago
I really like my Nord Grand, but I can't get used to the red color and I wonder how great it could look if the sideparts and the top would be in a black grand piano finish. I already have an offer from a professional company which does piano varnishing and now I wanted to disassemble my Grand.

And now I noticed some weird pics in the gallery...it looks like he went on and did it! He didn't post anything apart from the pics so I'll put them here, I think it's an awesome job! We are so used to the all-red of Nords that it looks almost weird...but really classy!


Wow - that looks stunning! I wonder what the company charged for that. I recently purchased a 2.5’ grand piano shell for mine (pic attached) - I like the look but don’t see it as a traveling solution. This change looks really cool!
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Re: Nord Grand complete disassembly and teardown guide

Postby JaKXz » 17 May 2021, 06:33

This is awesome, thank you!

Has anyone done this for the Electro 6?
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Re: Nord Grand complete disassembly and teardown guide

Postby timdeman » 19 May 2021, 11:31

My month-old Grand is already showing damage in the finish of the wooden top despite me being very careful. I guess any blemish immediately stands out on such a pretty surface :P . I was wondering if I can use the underside of that wooden top panel down the line if it's similarly finished (so I can "flip" the panel, so to speak, and use the undamaged underside). Of course, that only works if the other side of the panel doesn't have screw holes and is finished in the same way. If it doesn't I should just make peace with a few blemishes on an instrument in active use...

Any insight would be much appreciated =) .

Also: first post on the forum! =D
Last edited by timdeman on 19 May 2021, 11:32, edited 2 times in total.
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Re: Nord Grand complete disassembly and teardown guide

Postby Jesse Boarman » 30 Jul 2023, 08:22

I have a question for honey. 1st thanks for this detailed guide to open the Nordgrand!

You had said "If someone wants to know something specific without opening your own NG, I may be able to help." So here's my problem, and question:

I have a 2 year old Nordgrand that has been working fine. Played only inside, never gigged. Suddenly, out of the blue, every F, A and C# all up and down the keyboard started playing at 127 velocity, regardless of the played velocity (for example, very soft hits still play at max volume, on only those notes). This is regardless of what patch I play, and even if the keyboard is used as a controller, just transmitting midi. Since I live in a humid environment right on the ocean, I was thinking that maybe this might be due to some internal corrosion, and if I took apart the thing and carefully cleaned all the pins connecting the keyboard and reseated them (with Caig de-oxit for example), that this might fix it? The only repair place here in San Diego is backed up for many weeks.

Based on that symptom, do you think it's worth a try? Or better to just order and replace the whole Kawaii RH88B PWB Assy?

Thanks for your opinion!
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Re: Nord Grand complete disassembly and teardown guide

Postby ziozeus » 30 Jul 2023, 10:51

As you describe it I wouldn't think the pcb mechanical aspect related to rubber contacts of other reported peaking velocities issues here is the problem. Rather some in and out connection issue. From one pcb half to the other half, from the pcb to the main board (two more connections with fast connectors).
As a first attempt I would open the board and check these, without risking any other anti hypotethical corrosion act
Last edited by ziozeus on 30 Jul 2023, 10:53, edited 1 time in total.
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Re: Nord Grand complete disassembly and teardown guide

Postby Jesse Boarman » 21 Sep 2023, 20:22

Thanks so much for the info Ziozues. I agree with you analysis. Nevertheless, when I sent the same question to tech support at American Music & Sound (Nord farms out tech support to their national distributors), this was their response (see below). I don’t think they’re really thinking about this UNIQUE specific problem, (Every F, A & C#, In every octave up and down the keyboard). I could order and “Swap out” the rubber contact strips, but my suspicion is that won’t fix the problem. What do you think my next course of action should be?

Thanks in advance for any help you can give.

Hi Jesse,

Rubber contact strips need to be swapped out on this unit. This will require the newest contact strip PCBs, which have the updated blue contact strips. These can be ordered from us by the service center through our parts department anytime.

Best regards,



Logan Butters
Technical Support
American Music & Sound
An Exertis | Jam Business




(800) 431-2609

Logan.Butters@AmericanMusicAndSound.com



On Wed, 13 Sep at 12:51 AM , Jesse J Boarman <boarmanjesse@gmail.com> wrote:
On Sep 11, 2023, at 12:57 PM, American Music and Sound Support <support@americanmusicandsound.com> wrote:


Hi Jesse,

Could you send me the video? I am going to have the service team in Sweden recommend a course of action.



Best regards,



Logan Butters
Technical Support
American Music & Sound
An Exertis | Jam Business




(800) 431-2609

Logan.Butters@AmericanMusicAndSound.com



On Sun, 10 Sep at 1:48 AM , Jesse J Boarman <boarmanjesse@gmail.com> wrote:
Submitted on Sunday, September 10, 2023 - 07:48
Submitted values are:

Name: Jesse Boarman
E-mail address: boarmanjesse@gmail.com
City: San Diego
Country: USA
State:
Instrument model: Nord Grand
Instrument OS version: version 1.62
Computer OS version: N/A
Serial No: PE11747
Type of problem: Functional
Privacy Policy: I accept the Privacy Policy [1] *


Detailed description of problem/symptom:
Every few months, at apparently random intervals, every F, A and C# key,
going all the way up and down the keyboard in every octave, will start
playing at full velocity (127) regardless of the played velocity. All the
other notes play as normal, and are unaffected. This problem is regardless of
whether I am playing the internal sounds, or using the keyboard as a midi
controller, triggering a VST, for example.The problem occurs suddenly without
any apparent stimulus. When this problem occurs I have tried a system update,
as well as powering on and off, to no avail.

Then, just as randomly, a few days, or in some cases weeks later, the problem
disappears and the keyboard works normally. This problem has happened 4 times
so far over the last year. I have video tape of me playing the keyboard when
this problem is occurring (which I refrain from doing, of course), which I
would be happy to submit, if that would be helpful to you.

I contacted a local Nord authorized service repair center in my area, and
described the problem, and they said to bring in the keyboard so they could
repair it. But the day I was going to bring it in, the problem went away.

I talked to the people at the repair place and they said “Well, if it
ain’t broke, we can’t fix it. Why don’t you wait until the problem
recurs and bring it in then. Or, contact Nord or their US distributor and ask
them which part or parts they would recommend replacing based on your
description of this specific problem, and we will do that.”

So here I am. Can you help me? I don’t mind if I have to buy a whole new
Kawai RH88B PWB Assy, or whatever, or anything else, as long as it fixes the
problem. Can you help me?

Thanks so much in advance for the specific names and/or part numbers that you
think would be the likely cause of the problem, and which I should replace.

[1] https://www.nordkeyboards.com/node/6506


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Re: Nord Grand complete disassembly and teardown guide

Postby ziozeus » 24 Sep 2023, 09:17

Jesse I would buy and replace a new pcb as a first attempt. Maybe it's just the connection cables, but if you compare the relatively low cost of the pcb and the time you need to open the unit, once you go and open it then you'd better go down all the path and close it with a whole new soul. This way you would also be sure that all the chain wiuld be touched by you. Keep you eyes open and be sure to make good plug connections.
From the way you're writing it's clear that you're an analythic guy, more then enough to make a goo job.
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