Korg Forums Forum Index Korg Forums
A forum for Korg product users and musicians around the world.
Moderated Independently.
Owned by Irish Acts Recording Studio & hosted by KORG USA
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Kronos LS keyboard problem - sinking keys - design problem?
Goto page Previous  1, 2, 3, 4, 5, 6  Next
 
Post new topic   Reply to topic    Korg Forums Forum Index -> Korg Kronos
View previous topic :: View next topic  
Author Message
kronoskarma



Joined: 24 Jan 2021
Posts: 34
Location: Lutz, FL

PostPosted: Thu Mar 11, 2021 6:27 pm    Post subject: Reply with quote

Has this happened on newer Kronos keyboards? Mine is the 61 key titanium edition.

Both my M3 exp and Karma keyboards have had no keyed issues and I’ve had them for years and years.

Should I be concerned?

Mike
_________________
Korg Karma
Korg M3 Expanded
Korg Kronos Titanium
Yamaha Tyros 5
Arturia MicroFreak
M-Audio Oxygen 61
Akai Force
Roland MC-707
1010music Black Box
Zoom Arq 48
Back to top
View user's profile Send private message
jg::
Platinum Member


Joined: 14 Aug 2003
Posts: 684
Location: Melbourne, Australia

PostPosted: Tue Mar 16, 2021 12:07 am    Post subject: Reply with quote

This issue (and this thread) is only about the LS model, and only a small number of people seem to be affected. I also own a 61, and it's a different action, no problems there. I don't think you need to be concerned.
Back to top
View user's profile Send private message
GrandMasterKorg
Junior Member


Joined: 19 Mar 2014
Posts: 60

PostPosted: Tue Mar 16, 2021 4:01 pm    Post subject: Reply with quote

I would recommend to buy a Korg Kronos 88 with RH3 action. This is the best and sturdy keybed you can get!

I have a Korg Kronos X 88 from the year 2015 and never had any problem with the keybed.

It's huge and it's sturdy!!
Back to top
View user's profile Send private message
Docflick



Joined: 19 May 2019
Posts: 35
Location: Southeastern PA, USA

PostPosted: Wed Mar 17, 2021 3:36 pm    Post subject: Reply with quote

GrandMasterKorg wrote:
I would recommend to buy a Korg Kronos 88 with RH3 action. This is the best and sturdy keybed you can get!

I have a Korg Kronos X 88 from the year 2015 and never had any problem with the keybed.

It's huge and it's sturdy!!


Indeed! I owned a 2 88 for three years with no issues – either with the RH3 action, which is extremely high quality, or with crashing / boot up / etc. I now own a Titanium 61, which also has a great semi-weighted keybed – very playable, even for piano.

Some have reported issues with the LS and "sinking keys." Having played it in a local music store, I found it to be lacking in resistance and spring back. I would not buy an LS for that reason; plus no AT. YMMV
_________________
Current: Kronos 61 Titanium, Yamaha Montage 6, Roland Fantom, Dexibell Vivo S7 Pro, MPC Live II; Previous: Kronos 73 SE and 2 88, Yamaha Motif 6, XF, EX5, SY77, DX7 (x2), CP33, Roland JP-50, Alesis QS8
Back to top
View user's profile Send private message
DCMUSIC3



Joined: 27 Jul 2017
Posts: 19

PostPosted: Sun Mar 21, 2021 8:50 pm    Post subject: Reply with quote

I have contacted John McCubbery, Vice President, Worldwide Marketing at KORG and brought the problem to his attention.

Hopefully we will get some answers soon.
Back to top
View user's profile Send private message
rmdrent



Joined: 16 May 2012
Posts: 27

PostPosted: Thu Apr 22, 2021 10:08 pm    Post subject: Reply with quote

DCMUSIC3 wrote:
I have contacted John McCubbery, Vice President, Worldwide Marketing at KORG and brought the problem to his attention.

Hopefully we will get some answers soon.


Email address for this guy please.
I will follow up as well.
Back to top
View user's profile Send private message
mcgoo



Joined: 07 May 2021
Posts: 6
Location: Indiana

PostPosted: Fri May 07, 2021 8:09 pm    Post subject: Reply with quote

Late to the party here... I started Googling when my 3 yr old LS started developing the same problem & lo & behold I found this thread. I'm not handy enough to fix it on my own. I'm hoping to wait until there's a hole in my schedule before taking it in for repair since my repair shop is a few hours away & I know they'll need to keep it a while. My question is, for anyone who has had the sinking keys problem, are these keys on the verge of breaking? My LS is a single keyboard live rig, so I'm worried it may be a ticking time bomb if I keep gigging with it as is. Thoughts?

Back to top
View user's profile Send private message Visit poster's website
GregC
Platinum Member


Joined: 15 May 2002
Posts: 9447
Location: Discovery Bay (San Francisco Bay Area)

PostPosted: Sat May 08, 2021 5:39 pm    Post subject: Reply with quote

mcgoo wrote:
My question is, for anyone who has had the sinking keys problem, are these keys on the verge of breaking? My LS is a single keyboard live rig, so I'm worried it may be a ticking time bomb if I keep gigging with it as is. Thoughts?



its a $3000 keyboard , not a cheapie.

And the problem 'won't go away ' no matter what others post.

take it in for service. Repair should be free IMO
_________________
Kronos 88. MODX8
Achieve your musical dreams Smile
https://soundcloud.com/user-898236994
Back to top
View user's profile Send private message Send e-mail
DCMUSIC3



Joined: 27 Jul 2017
Posts: 19

PostPosted: Wed May 12, 2021 10:56 pm    Post subject: Reply with quote

rmdrent wrote:
DCMUSIC3 wrote:
I have contacted John McCubbery, Vice President, Worldwide Marketing at KORG and brought the problem to his attention.

Hopefully we will get some answers soon.


Email address for this guy please.
I will follow up as well.


Hi rmdrent.
Unfortunately I don't have his email address.

The Australian distributors are getting me a NEW KEYBED.

My advice would be to contact your local retailer who should then contact the local distributor.


Apparently Korg are aware of the problem.

Good luck, mate.

cheers,
DC.
Back to top
View user's profile Send private message
DCMUSIC3



Joined: 27 Jul 2017
Posts: 19

PostPosted: Thu Jun 03, 2021 11:26 pm    Post subject: Reply with quote

Here's a video of my repair of a faulty key.

https://youtu.be/gX4EyCk3ZVc

A few weeks after making this video I received a new keybed.

More details to come.
Back to top
View user's profile Send private message
mcgoo



Joined: 07 May 2021
Posts: 6
Location: Indiana

PostPosted: Fri Jun 04, 2021 1:21 am    Post subject: Reply with quote

DCMUSIC3 wrote:

A few weeks after making this video I received a new keybed.

More details to come.


If Korg is covering that, I'd sure to know before I plop down $200 for the 4 keys on my LS that need to be replaced.
Back to top
View user's profile Send private message Visit poster's website
DCMUSIC3



Joined: 27 Jul 2017
Posts: 19

PostPosted: Fri Jun 04, 2021 2:38 am    Post subject: Reply with quote

mcgoo wrote:
DCMUSIC3 wrote:

A few weeks after making this video I received a new keybed.

More details to come.


If Korg is covering that, I'd sure to know before I plop down $200 for the 4 keys on my LS that need to be replaced.


My advice would be to contact the dealer that sold you the unit. They should notify the local distributor to organise a new keybed for you.

The design of the key springs has been modified.

Good luck, mate.
Back to top
View user's profile Send private message
mcgoo



Joined: 07 May 2021
Posts: 6
Location: Indiana

PostPosted: Fri Jun 04, 2021 12:10 pm    Post subject: Reply with quote

DCMUSIC3 wrote:


My advice would be to contact the dealer that sold you the unit. They should notify the local distributor to organise a new keybed for you.

The design of the key springs has been modified.

Good luck, mate.


PM sent.
Back to top
View user's profile Send private message Visit poster's website
DCMUSIC3



Joined: 27 Jul 2017
Posts: 19

PostPosted: Fri Jun 04, 2021 11:20 pm    Post subject: Reply with quote

The new keybed.

new Kronos keybed EDIT 2.jpg

The old key spring.

Spring original text.jpg

The redesigned spring.

Spring new design text.jpg

The sharp edge of the spring has been smoothed out.

Let's hope this new design fixes the issue.
Back to top
View user's profile Send private message
geoelectro
Platinum Member


Joined: 14 Sep 2012
Posts: 1021
Location: Texas

PostPosted: Sat Jun 05, 2021 1:12 pm    Post subject: Reply with quote

This is a similar spring used in the older "Hammer Action" by Yamaha prior to 1998. One end of the spring pushes against the key frame while the other end pushes against the key. The motion of the key causes friction where the spring meets the key and begins to wear the plastic of the key. As it wears, the total gap the spring sits in expands causing the spring to lose tension. In this case, it took years for this wear to become evident.

Repairs required replacing the key (which are no longer available)

The replacement keybed called the Graded Hammer Effect has been a great replacement with a much better feel and no key/spring wear.

A good action design would depend more on gravity than springs. The key weights are usually down. Pressing the key raises the weight and gravity pulls it back down. A spring can be used to make this action a little more snappy but without the high tensions that cause wear.

Geo
_________________
Kronos 61 : 3GB RAM 120GB 2nd Drv.
Kronos 2 61
Synthesizers.com Custom Modular
N.I. Komplete 11, Omnisphere 2, VB-3.
HP i7 8GB Win 10
Yamaha P-80 Weighted Keyboard. NanoPad2
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Korg Forums Forum Index -> Korg Kronos All times are GMT
Goto page Previous  1, 2, 3, 4, 5, 6  Next
Page 4 of 6

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group