KRONOS POWER DOWN

[richyrich]

Hi GUYS Please can you help me
I have a kronos 88 and at a gig the other day it just powered itself off,
I retarted and the same happened again a minute later, and again for another half hour.

I checked all power and decided it wasnt that, the i reverted back to an older ksc file thinking the loaded one was somehow corrupt and it seemed to work and i got through the gig,

The next day i switched it on and all seemed well but then it happened again. and i have noticed a whirring sound for the first time like a hardrive sound.

Any advice appreciated as i am in a wedding function band and have gigs all the time .

[GregC]

Hi GUYS Please can you help me
I have a kronos 88 and at a gig the other day it just powered itself off,
I retarted and the same happened again a minute later, and again for another half hour.

I checked all power and decided it wasnt that, the i reverted back to an older ksc file thinking the loaded one was somehow corrupt and it seemed to work and i got through the gig,

The next day i switched it on and all seemed well but then it happened again. and i have noticed a whirring sound for the first time like a hardrive sound.

Any advice appreciated as i am in a wedding function band and have gigs all the time .

1)UPS
2) loose (unseated ) ram

[richyrich]

Hi Thanks for quick reply

What is UPS?
would this ram unseated cause wurring sound?

[voip]

UPS - Uninterruptible Power Supply - basically a battery backed mains power supply which normally passes the mains through to the devices plugged into it, and switches over to battery backup if the mains fails, even momentarily. Most UPSs filter the mains and some also "top up" the mains voltage if it is too low and reduce it if it is too high. Quite a few Korg Kronos folk use them to avoid having delays during a performance whilst the Kronos boots up every time the mains power glitches, even briefly, which happens all too often in live situations. Having the Kronos powered via a UPS is no bad thing.

Since the heart of the Kronos is a dedicated computer, the RAM, or computer memory in the Kronos is basically the same as the random access memory used in computers. The electrical contacts between the RAM and its socket can be unreliable, and vibration whilst transporting the Kronos could cause loss of connection. Re-seating the memory has fixed issues like yours for quite a few people on this forum.

The whirring noise could be the system fan. Quite a few people have reported noisy fans on the Kronos. What are the fan settings in the Global menus? There may not be any in the original Kronos, whilst the Kronos X and K2 have several fan setting options.

The Kronos has a power down function, controlled from the Global menus, which utilises a motorised plunger to physically turn off the mains power switch. After such a power down, the mains switch is harder to flip to the on position because the internal plunger has to be moved back to its start position. If you find that the power switch requires additional force to turn the Kronos back on, it could be that this mechanism has activated possibly due to a fault.

Do let us know how you get on.

[Derek Cook]

UPS - Uninterruptible Power Supply - basically a battery backed mains power supply which normally passes the mains through to the devices plugged into it, and switches over to battery backup if the mains fails, even momentarily. Most UPSs filter the mains and some also "top up" the mains voltage if it is too low and reduce it if it is too high. Quite a few Korg Kronos folk use them to avoid having delays during a performance whilst the Kronos boots up every time the mains power glitches, even briefly, which happens all too often in live situations. Having the Kronos powered via a UPS is no bad thing.

+1000

Do not gig without one! My research before purchasing the Kronos indicated the need for a UPS, so I went into it with eyes open.

The UPS has saved my bacon a few times now when power has glitched. Even without the Kronos, I'd never be without a UPS on stage now.