RH3 Keybed Information

[musicman50]

1. When and where fixed.
20 Apr 2012 - Musicians Repair Service in San Diego, CA
It went into the shop on Feb 11, 2012 so the repair took close to 10 weeks because the parts were backordered at Korg.

2. Which model.
K88

3. Information about specific repair.
Only contacts were replaced.

4. Results. Did it fix the problem.
I no longer get any double triggering

On my work order invoice it says according to Amy @ Korg, Korg is only sending contacts now. It also says the repair took 2 hours and they installed firmware 1.5.2 to accept the keybed changes.

[maphill]

1. When and where fixed.
Online Repair, Denver metro area.

2. Which model.
K73

3. Information about specific repair.
Keybed, OS (and threw in memory while at it)

4. Results. Did it fix the problem.
Yes. Keybed has a more consistent spacing and feel.

Mark

[ferma1981]

hallo from greece. i have korg kronos 88 with problems in the keybed. today i spoke with the local dealer in greece. he informed me that its time to repair mine kronos. he told me that he will update os to 1.6. he also told me that they will not change all the keybed. they will change only some parts of it. the greek name is μεμβρανες and the english i think is contacs or switch strips (i am not sure) . he also told me that it is the only solution. local dealers now are able to solve the problem by their own only with the change of the contacs. in the past this procedure could be done only in the factory and this is the reason that they sent a full new keybed. i also asked him if i can pay to order a new keybed and he asked me that there is not new keybed.

any idea? is there other person with the same situation??? i will send kronos for service and i want to ensure that this is the only way...

i am really sorry for my bad communication... i have problems with english language.

[MarPabl]

hallo from greece. i have korg kronos 88 with problems in the keybed. today i spoke with the local dealer in greece. he informed me that its time to repair mine kronos. he told me that he will update os to 1.6. he also told me that they will not change all the keybed. they will change only some parts of it. the greek name is μεμβρανες and the english i think is contacs or switch strips (i am not sure) . he also told me that it is the only solution. local dealers now are able to solve the problem by their own only with the change of the contacs. in the past this procedure could be done only in the factory and this is the reason that they sent a full new keybed. i also asked him if i can pay to order a new keybed and he asked me that there is not new keybed.

any idea? is there other person with the same situation??? i will send kronos for service and i want to ensure that this is the only way...

i am really sorry for my bad communication... i have problems with english language.

Yes, this is the only way right now. Some time ago, the only one solution was to exchange the whole keybed, but this solution was offered for a limited time, while this new solution (changing rubber contacts) was sorted out.

If you read this whole post, you can see both solutions have been applied and it seems both fix the issue. However, we have no way to compare both solutions in order to discern if one is better than the other

[runningman67]

Fixed A C Hamilton Preston Lancs UK

Kronos 73

Korg UK replaced rubber contacts

The fix has fixed the double strike and cut off notes.

Delighted

[miljantoto]

1. When and where fixed.

11 April, KORG & MORE Division of MUSIK MEYER GmbH
Marburg - Germany

2. Which model.

KRONOS 73

3. Information about specific repair.

Rubber contacts changed . Version 1.5.2 installed.

4. Results. Did it fix the problem.

It is a complete success. And even better dynamics & feeling now

5. Serial number.

002218

After two months of waiting, my K73 is fixed and keys are perfect now. RH3 feeling is different . Much better now and dynamics (vel curve) is improved, at least I have this feeling.
It is honor to me that legendary Michael Geisel ,himself, tested my Kronos 73 and confirmed that everything is fixed.
Thanks to everyone in Korg Germany support for understanding

Conclusion:
The greatest workstation is even more greater now.

Miljan

[korgboy]

1. When and where you had the repair performed

Mars Amp Repair, Denver, Colorado (March 2012)

2. Which model (73 or 88 )

88

2. Any information you were told about the specific repair made

The shop had heard about this problem, and was kind enough to order the new keybed before my unit actually arrived at their shop (I compelled them to do so because I live 5 hours from Denver).

3. The results -- did the fix work?

YES!! My K88 is finally as it was designed to be.

4. Serial Number (optional)

001443


I had the note cutoff problem. Very noticeable while playing piano patches, and less noticeable while playing other patches. The new keybed feels a tad different than the old one. I would swear that the action is a hair more shallow. Both the old and new keybeds had the textured black keys, which I've grown quite fond of.

I had an interesting dilemma, however. After I got it home (again, 5 hours away from the shop), I realized that a B key near the center of the keybed was a tad sticky, and a high F# would mechanically click when it was played. This was obviously rather discouraging. However, I was easily able to fix it myself by opening it up (shhhh, don't tell) and adjusting the position of the bar that runs along the front of the keybed. It was mashed up against the front of the keys just a bit too close, causing that B key to feel a bit sticky. The clicking problem turned out to be a loose grounding strap that is supposed to stick to the frame of the keybed. It looks like it somehow got forgotten when they put it back together and got mashed up when they reassembled it. No worries.

My experience was a mixed bag. Initially the results seemed to be perfection, but those two lingering problems raised a lot of concern. With a little careful (and fairly experienced) exploration, I was able to correct the remaining concerns myself. However, if I lived closer to a major city, I would have returned a second time to get the issues resolved by the experts.

My advice to anybody that is considering having the procedure done is this: it is absolutely worth the trouble to take it in and get the keybed replaced. But take some time while it's still at the shop and check it thoroughly for mechanical and alignment issues.

[Ten2One]

I returned my K 88 and got a new one with the contacts replaced and the spacing corrected. I agree that the key travel seems a little more shallow than the first one. I would prefer the original distance but there are no double strike problems so I can live with it.

The key spacing was was as you would expect from a quality keyboard but now a couple of keys are starting to show irregular spacing. It's in a couple of the higher registers so it's not a big problem.

I'm happy with the Kronos and the features make it worth the trouble I've had.

Ten2One

[Francois]

Those who have suffered the problem, did it materialize quickly after you received your Kronos ?

[runningman67]

Those who have suffered the problem, did it materialize quickly after you received your Kronos ?

Yes

[Francois]

OK, thanks. So it seems mine is OK then as I played it for over two hours last night, trying lots of staccato to check the rebound action. So far so good !

This is something I wanted to check before opening it to install memory, ssd and new fan. No point doing this if it goes back for repair shortly after !

[Melodialworks Music]

Francois -

Soft legato playing is more likely to produce the re-trigger problem. Especially in the tenor range, although not restricted to that range. Hopefully you will not have any issues!

Lawrence

[QuiRobinez]

Francois -

Soft legato playing is more likely to produce the re-trigger problem. Especially in the tenor range, although not restricted to that range. Hopefully you will not have any issues!

Lawrence

yes soft legato would be better, It took me a couple of weeks to identify the problem, the first weeks i thought it was caused by polyphony problems. But after discovering the problem i could reproduce it within seconds on every kronos i've tried (i've tried 5).

The way i tested it was playing portato on 5 notes next to eachother back and forth. Within 10 seconds the problem occured on the kronosses i've tested that way.

My Kronos is fixed now for quite some time (keyboard was replaced) and after that i've never experienced any problem whatsoever with the keys. So the fix was a perfect solution.

[Francois]

Thanks. I'm going to try that. Hopefully, my unit being newer, it could be that it was manufactured post cure.

[Francois]

If only Korg could say "units between serials XXXX and YYYY are concerned", this would make things much easier ! But perhaps it is not possible to single out specific units.

Edit: big test using the whole keyboard with portato playing, and no problem. Phew.... !

Looking at the keyboard itself, everything looks perfect. No weird spacing or keys of different heights. Either I'm amongst the lucky few or my Kronos is one manufactured after the problem was fixed.