Korg Forums

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

Hi to everyone.

A friend of mine gave me his kronos considered as "bricked".

Kronos 1 88.

In short : the mainboard has burned. He replaced with a new one bought from Korg (Intel D510). The SSD seems not original also, as it's a Kingston SSD 128gb.

When i got it, the keyboard was not booting, displaying a "19, keybed" error (file system corrupt...)

I did a full format + install on another SSD (the same Kingston 128gb) i had in spare in a drawer, because i wanted to keep his SSD intact, just in case.

After many aborted trials with Kronos V3 DVD, i managed to finish the full install with V2.0.2 DVD.

But when it came the authorization process, the problems started again.

I re-registered the Kronos via korg.com, with the Public ID displayed on the keybed, the serial number, etc etc.

I got a .reauth file i downloaded and put on a freshly fat32 formatted USB stick.

The synth says "authorization file found" then "success" but after reboot, i'm back to the authorization screen ever and ever.

I don't understand the problem. My .reauth file is sized 80bytes, it seems really little... i wonder if the authrozation process on korg.com is faulty and give corrupted .reauth file ?

Anyway, i need help to bring this keyboard back working. So, thanks in advance for your answers Smile

(sorry if i made mistakes in english, i'm french native...)

KK · Platinum Member Joined: 13 Oct 2016 Posts: 1422

First thing you must be 100% sure is the MB model. Don't trust what was mentioned and open the unit. If the "new" MB has a square black heatsink, it's an old model for K1. If it instead has a rectangle-shaped aluminum color heatsink, it's a K2 MB. The Kronos will refuse to boot depending which OS you installed for which MB, etc.

Read interesting related topic here, especially page 3 :

http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=110329&postdays=0&postorder=asc&start=30

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

I opened the Kronos as soon as i got it for repair, as a Linux enthousiast, i wanted to know what was inside.

So i'm 100% sure it's the good V1 Motherboard (Intel D510).

I connected an external monitor to the vga, a mouse, a keyboard, in order to monitor anything that could be usefull.

I really don't understand why the .reauth file is not really validated, there is no error on the screen, and the synth always reboot asking for authorization.

tunaman · Senior Member Joined: 28 Nov 2019 Posts: 427

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

I just tried with a thumb drive freshly formatted on my Korg M3 (the Kronos cannot boot, so i can't format the stick on it). The problem is still there. The synth keep asking the .reauth file, despite saying "file found" and "process ok" each time i put the usb stick.

AntonySharmman · Posted: Thu Aug 27, 2020 10:44 am Post subject:

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

Some more infos on my quest :

I'm almost sure the SSD is not the original one also, as it's a Kingston 128gb, and i read everywhere that Kronos had a factory 60gb SSD .

But anyway, i performed a full install after full format, on a NEW (but identical Kingston 128gb) SSD, so there should not be any file conflict.

I really doubt the owner still has the original SSD, nor the original (burned) mainboard.

I asked Korg France for support, but everyone is on hollidays for the moment :/

GregC · Posted: Thu Aug 27, 2020 3:51 pm Post subject:

pedro5 · Posted: Thu Aug 27, 2020 10:56 pm Post subject:

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

The clean install was done with the V2.0.2 DVDs (2 DVDs set) from the Kronos X.

I didn't found ISOs of the original V1 DVDs.

I also tried with the V3 DVD from Kronos 2, but it didn't work.

Currently, the install is a 2.0.2.

pedro5 · Posted: Sat Aug 29, 2020 11:12 pm Post subject:

Using the 2 DVD set from the Kronos X should be ok.

Not sure what version they would be listed as, but probably will work anyway.

Try a different usb stick for the authorisation file and make absolutely sure to follow the exact procedure as per the user manual.
It can be so easy to miss a step etc.

It is possible the file given to you may be faulty, either from source or been corrupted along the way…download, transfer onto medium etc.

Also try to do a more recent os update, the one on a restore DVD is quite old….even though it should work.

A possible useful link.
http://i.korg.com/SupportPage.aspx?productid=598

Athena Music Studio · Junior Member Joined: 21 Jul 2011 Posts: 53

Problem solved : in fact, the D510 mainboard was "dead".

I found a spare D410 mainboard for only a few euros, so i tried it, and it works : now the keyboard boot and finish the startup.

But the D410 has only a single core / 2 thread CPU, so i doubt it will be OK for real use. I try with it anyway, but now i'm waiting for a D252 mainboard to upgrade to Kronos X Smile

The old D510 board is working well as a standard computer in another case, so i don't really what the failure came from.