Kronos 2 - Power cycle issue

[Eeshan]

Hello All,

Yes i think everyone here is familiar with this issue. Im genuinely hoping to get honest suggestion here as to what should i be doing.

I own a K2-61, a Fantom G6, Yamaha Clavinova Digital Piano, Yamaha MSP-5 Studio speakers, soundcard and my Macbook Pro.
Now all of the above are connected to Two Sets of spike guard (NO UPS)

1) When I'm practising or working on a patch, both my Fantom G and the Kronos are ON. Today, everything was ok with the Fantom G, but i got that Dreadful power cycle error message on the Kronos. I did as mentioned. Rebooted after 10 Seconds.
Nothing happened for 2 hours, and BAM that message came back.
Firstly, if it is a power surge issue, shouldn't both my keyboards be affected here, but only Kronos flashed that message, why?

2) Thankfully its rebooting well, i can play it for an hour too but then that message pops up. Is the answer to the problem, a UPS? if not, then what is it? how did you all recover from this issue?

Hoping to hear from you all

Regards
Eeshan

[KK]

The Kronos differs from other digital keyboards - it includes a computer and is sensitive to AC line variations. Protect it with an UPS. I have mine plugged on an UPS since three years - zero problems.

[GregC]

[quote="Eeshan"
I own a K2-61, a Fantom G6, Yamaha Clavinova Digital Piano, Yamaha MSP-5 Studio speakers, soundcard and my Macbook Pro.
Now all of the above are connected to Two Sets of spike guard (NO UPS)

1) When I'm practising or working on a patch, both my Fantom G and the Kronos are ON. Today, everything was ok with the Fantom G, but i got that Dreadful power cycle error message on the Kronos. I did as mentioned. Rebooted after 10 Seconds.
Nothing happened for 2 hours, and BAM that message came back.

-Firstly, if it is a power surge issue, shouldn't both my keyboards be affected here, but only Kronos flashed that message, why?


Eeshan[/quote]

I think the answer to 1) is mostly simple- and an assumption. Kronos relies on steady power, its more demanding than your older and simpler Fantom G

2) As you google this forum, you will find a variety of solutions.

I vageguley recall a recent post where the SATA cable had to be switched from 0 to 1. You should find the specifics with a google search.

[Eeshan]

The Kronos differs from other digital keyboards - it includes a computer and is sensitive to AC line variations. Protect it with an UPS. I have mine plugged on an UPS since three years - zero problems.

So u mean to say in such cases lack of UPS is the main issue? At least in my case that clearly seems to be the issue as I don't have one. I just have a spike guard.

[Eeshan]

[quote="Eeshan"
I own a K2-61, a Fantom G6, Yamaha Clavinova Digital Piano, Yamaha MSP-5 Studio speakers, soundcard and my Macbook Pro.
Now all of the above are connected to Two Sets of spike guard (NO UPS)

1) When I'm practising or working on a patch, both my Fantom G and the Kronos are ON. Today, everything was ok with the Fantom G, but i got that Dreadful power cycle error message on the Kronos. I did as mentioned. Rebooted after 10 Seconds.
Nothing happened for 2 hours, and BAM that message came back.

-Firstly, if it is a power surge issue, shouldn't both my keyboards be affected here, but only Kronos flashed that message, why?


Eeshan

I think the answer to 1) is mostly simple- and an assumption. Kronos relies on steady power, its more demanding than your older and simpler Fantom G

2) As you google this forum, you will find a variety of solutions.

I vageguley recall a recent post where the SATA cable had to be switched from 0 to 1. You should find the specifics with a google search.[/quote]

The SATA cable?

[Falcon2e]

I have a very basic UPS, the cost was just under $80. I think it’s money well spent. It’s saved my bacon several times during power hiccups. I haven’t seen “that message” since.

[Eeshan]

I have a very basic UPS, the cost was just under $80. I think it’s money well spent. It’s saved my bacon several times during power hiccups. I haven’t seen “that message” since.

Oh that's good! Maybe the UPS will help me out here.

[voip]

A spike guard will only offer a degree of protection against high voltage spike type surges, and longer duration (milliseconds), quite high overvoltage events. It will not protect against brownouts, or short term dropouts, which a UPS should protect against.

[Falcon2e]

I have a very basic UPS, the cost was just under $80. I think it’s money well spent. It’s saved my bacon several times during power hiccups. I haven’t seen “that message” since.

Oh that's good! Maybe the UPS will help me out here.

I’m really betting (and hoping) that might fix your issues. I had a top of line power conditioner, but it’s not a UPS. Do a Google search under computer surge protection, or something like that, and you’ll find many to choose from. Figure out your voltage/wattage requirement, and GET one. It will probably have a motorcycle battery included.

[Sweat]

I've gigged heavily with my original K for 8 years. It has happened that after a couple years or so of traveling in bumpy vehicles, I have experienced the power cycle message or it will begin rebooting at random. To resolve this, the only thing I have ever done is open the unit and re-seat the memory sticks, or pull them out and plug them back in. Afterwards, it works like new.

A UPS might keep you running in case the power shuts down. That's good, but I use a Furman AR-15 Voltage Regulator that keeps power fluctuations more steady, especially on outdoor event generators or old building circuits.

[Poseidon]

A spike guard will only offer a degree of protection against high voltage spike type surges, and longer duration (milliseconds), quite high overvoltage events. It will not protect against brownouts, or short term dropouts, which a UPS should protect against.

The cheapest UPS (Offline standby ) have transfer time between 5 to 25ms.
If a device receiving power is not able to handle it, UPS will not protect you against dropout or brownout.
It’s worth to mention that Offline UPS have limited voltage dip and spike protection.

The better option is line interactive UPS, they have lower transfer times.

If a line is very noisy, with constant drop outs, online UPS is preferred option for sensitive devices. It offers an electrical isolation as well.

[Eeshan]

So i ve purchased a UPS. Connected it and i want to keep it on for a few hours to see how it goes. I really hope i don't see that message again.

Fingers crossed.

Will keep you all posted and thank you so much for such prompt reply and solutions.

[Eeshan]

So here's the thing.

I plugged my K2-61 to a brand new UPS. Kept it on for 5 hours, AND BAM , the dreadful message "A problem has been detected ... - popped up again.


Switched it off, waited for a day (Hoping for a miracle maybe), turned back On, and after an Hour, that message popped up again.

Now I'm really confused and worried, why is this happening? Its running on a latest OS, latest Firmware.
Then why is this issue happening?

[Sweat]

As mentioned, I would suggest reseating the internal RAM memory cards. This has worked for me and others to help correct the problem. An authorized Korg service center can do this. (Hopefully there is one near you.) Otherwise (although voiding warranty), you can easily do this yourself if you are confident with opening the underside panel.

[Devnor]

If you've built computers and have some mechanical smarts and your warranty expired you can perform basic PC trouble shooting to Kronos. Re-seat memory and all pluggable connectors, check the fan, replace SATA cable, reapply CPU heatsink paste. You could try a new SSD with new OS. Maybe replace memory. Good luck!