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Keybed Action repair-Korg Triton Studio 61

 
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Mon Mar 09, 2020 4:34 am    Post subject: Keybed Action repair-Korg Triton Studio 61 Reply with quote

I'm wondering if I were to replace about 20 to 30 key return springs in the most center worn area of the Korg Triton Studio 61 keyboard, would that improve the action/response/feel? It has become mushy in that high-traffic area over time.

I am also contemplating replacing the long felt that runs under the entire keyboard to help bring things back to new-ish feel/action. Does anyone have any experience on this matter?

Do the rubber contact pads have anything to do with the actual feel of the boards action? Do the rubber contacts lose their elasticity over time and consequently affect the action/feel?

I've thought about buying a new/used entire keybed (because actual 'New" probably doesn't exist), but there is no way of knowing how much wear that the replacement keybed may have received over its years.

Or will I end up with an uneven feel across the board by just replacing only 20 or 30 key returns springs?

I know there is something to be said about breaking in a keyboard evenly over time.

Sorry for the 1001 questions - but I greatly appreciate any insight or experience on this matter!

RW


Korg Kronos 61
Korg Triton Studio 61
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voip
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Joined: 27 Nov 2014
Posts: 3758

PostPosted: Mon Mar 09, 2020 9:58 am    Post subject: Reply with quote

The keybed in the Triton Studio 61 is the Yamaha FS 61, so it is shared with boards like the M1 and Wavestation. Sluggishness in the keys is probably down to the key grease suffering from age, a mixture of oil migration and fine dust getting mixed in with the grease. The springs themselves don't seem to suffer so much from use, though they can work themselves away from their original positions, leading to dropped keys. The solution is to give the keybed a service, cleaning off and replacing the key grease with Yamaha key grease, and ensuring the springs are back in the proper position:

https://www.proaudioservice.co.uk/product/yamaha-piano-keyboard-grease-g-1006y-ca-10gr-white-key-qn110896/

Do NOT use lithium grease. It will work for a while, but will degrade the keybed plastics over time.

PS: the product link above shows "out of stock". An alternative part is Molykote EM-30L.

.
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Mon Mar 09, 2020 8:43 pm    Post subject: Reply with quote

Wow, I had no idea there was any kind of grease at all in the keybed. These keybed are workhorses. I love the action and durability. I am on my 3rd Triton studio for a number of reasons and the keybeds being one of them.

I am going to do the service myself and I appreciate your expertise very much!

RW
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Tue Mar 10, 2020 12:31 am    Post subject: Reply with quote

I'd also like to know if anyone has a vid or pic tutorial of where the keybed grease goes? Etc. Thanks MUCH again to all!!

RW
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voip
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PostPosted: Tue Mar 10, 2020 8:43 am    Post subject: Reply with quote

See:

http://bustedgear.com/repair_Yamaha_Korg_keys_2.html

Fourth image down shows the vertical key guide post, with a white key removed, with the grease residue visible on the post. The inside of the key will also have grease residue in the corresponding location. Both parts need to be cleaned and a small amount of grease applied. Very little grease is required; a 10g pot will be sufficient to grease several keybeds.
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RMW



Joined: 27 Sep 2019
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PostPosted: Sat Mar 14, 2020 11:55 pm    Post subject: Reply with quote

Thanks So Much!
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Mon Mar 23, 2020 1:11 am    Post subject: Reply with quote

Now I am about to replace the red felt under the keys. I tried to pull up the old red felt but it wasn't coming all up easily without leaving a lot of it stuck to the metal runner it's on. Also, there is a clear looking flat strip of electrical wire that seems to travel under the felt. So now I'm confused, and I haven't done anything yet before I asked here on the forum.

Am I suppose to remove the entire red felt, and all of the red pieces that seem to have degraded and fallen apart? I don't want to damage the flat wire underneath the felt!?

Again, I appreciate any help and insight!

RW
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Mon Mar 23, 2020 9:26 pm    Post subject: Reply with quote

This is where I'm at so far-trying to figure out how to remove the old red felt to install the new felt I purchased. You can see that a whole layer of red felt is staying glued to the railing. I'm also concerned about not damaging the flat wire which runs below the old felt. See pic links below.

Any direction or insight would be helpful.

Pic Links:
https://ibb.co/6X7585d
https://ibb.co/BGGGbKy
https://ibb.co/wSBqP39
https://ibb.co/23GH70v

RMW
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Mon Mar 23, 2020 10:17 pm    Post subject: Reply with quote

Ok, I figured it out. It has a sticky backing that I could not see at first so I gently probe at the end until I found the sticky backing of the felt strip and then pull it out slowly watching not to disturb the flat wire lying beneath. You can see how bad the felt was and I can tell that it has been a major contributor to the noisy bed and to the action not coming back up as quickly as it should.

Video of the removed keybed felt.

https://vimeo.com/400047844
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voip
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PostPosted: Tue Mar 24, 2020 10:55 am    Post subject: Reply with quote

The "flat wire" is the aftertouch sensor strip. Hopefully that is still working. Pleased to hear you seem to have fixed it.

.
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Wed Mar 25, 2020 6:01 pm    Post subject: Reply with quote

Yes, I hope the AT is still working also. Do you think I have to replace the exact style/type/texture/density/thickness felt as the red felt that I took off the AT strip?

Because so far, I haven't been able to find the exact "red felt" product that was on the AF strip. I have seen 2 AT units with the red felt attached for sale online, but I haven't found that same red felt for sale by itself anywhere. Yikes.

RMW

Here is a video of where I am at in this process of refurbishing the keybed.
https://vimeo.com/400731396


Last edited by RMW on Wed Mar 25, 2020 8:31 pm; edited 1 time in total
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voip
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Joined: 27 Nov 2014
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PostPosted: Wed Mar 25, 2020 7:54 pm    Post subject: Reply with quote

Find a Program or Combi that uses aftertouch and see if it still responds, or use MIDI-OX to see if the aftertouch CC# messages are being generated by strong key pressure.

.
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Wed Mar 25, 2020 8:36 pm    Post subject: Reply with quote

voip wrote:
Find a Program or Combi that uses aftertouch and see if it still responds, or use MIDI-OX to see if the aftertouch CC# messages are being generated by strong key pressure.

.


Will Do!

https://vimeo.com/400731396
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Thu Mar 26, 2020 7:45 pm    Post subject: Reply with quote

Hey all, I am asking if anyone knows about the adhesive-backed Red felt type, and where I can get it, that goes on the After Touch Strip in a Korg Triton Studio 61? I took mine off because it was really bad but am now finding it really hard to find the replacement part.

Here are a couple of pics showing what it is, what it looks like, and where it resides on the keybed:

https://ibb.co/wSBqP39
https://ibb.co/23GH70v

Thanks so Much!

RMW
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RMW



Joined: 27 Sep 2019
Posts: 34

PostPosted: Sat Mar 28, 2020 7:58 pm    Post subject: Reply with quote

Sorry to seem so needy here, but also can someone give me any information on how to install a new aftertouch strip on my Korg Triton Studio 61? Like what adhesive? and any application install tips?

Again, Thanks to everyone!

RMW
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