Korg Forums

massca · Joined: 10 Jun 2005 Posts: 13 Location: Italy

Thank you for your answer. I wrote to manufacturer to know if is it possible to have the original part.

I have the technical skills, but I don't like very much the idea to make changes into the Kronos Smile

_________________
Korg KronosX 73, Nord Electro4 73, Roland VP770, Yamaha Tyros2, Main Stage, MacBook Pro 15.

AntonySharmman · Posted: Sat Jul 22, 2017 5:42 pm Post subject:

dbx1214 · Joined: 14 Jul 2017 Posts: 16

Service repaired my KronosX PSU and checked it. Serviceman said that Kronos is working, and starting up 100%. But in my house, i still have the same problem.

So, PSU is 100% efficient, RAM is 100% efficient.

Previous owner don't have any problems, serviceman said that my Kronos is 100% efficient and works correctly 100%.

Is it possible that its problem with SSD? Maybe electric current in my house?

GregC · Posted: Fri Jul 28, 2017 2:26 pm Post subject:

AntonySharmman · Posted: Fri Jul 28, 2017 6:35 pm Post subject:

dbx1214 · Joined: 14 Jul 2017 Posts: 16

I checked In another places. Problem still exist. Not only In my house.

After long break, Kronos always starts correctly.

Should I change PSU to The new one?

Sad

psionic311 · Posted: Mon Jul 31, 2017 8:15 pm Post subject:

For one thing, you should not turn off and then turn on immediately... it says in the manual specifically NOT to do this. You must wait at least 10 seconds.

From page 8 in the Operator's Guide:

2. POWER switch
This switch turns the power on and off. Before turning
KRONOS off, make sure that you’ve saved any edits to your
Programs, Combis, Songs, or other user data.
After turning the power off, please wait for at least ten
seconds before you turn the power on again.

Secondly, I would strongly advise you get a UPS to protect your Kronos. It will give you clean power and a battery backup in case of a blackout or brownout, so that the Kronos power needs are protected.

AntonySharmman · Posted: Mon Jul 31, 2017 8:20 pm Post subject:

Checking Kronos PSU in another house is not a prove or solution !
Buy a 100 watts cheap UPS of 40 $ that you will need it anyway and then check this issue !
If this still exists then get prepared to replace Kronos PSU but not now , only when this time will come , that might last to long ...
But if this bothers you , ask your service to replace it (if available though).
Also remember that as I said before , there is also a case of motherboard control problem , rare case but it can happen !

PS : As a developer , I turn on and off Kronos in intervals <3 seconds for 20 times per day for many months until today ,
PSU is a SMPS (that I design for years) and definately do not need time intervals , only OS could face issues , but this is not the case here !
_________________
Music Conductor - Sound Engineer & Developer - Automotive SMPS/RF R&D - Electronics Engineer
PaSeries Demos - WavesArt.eu - KorgPa.gr <> Facebook

Keyboards : Steinway-D, Kronos X, Pa5X 76, Pa4X 76, Montage M7 , Roland-XV88, Emu3,Emax II,Synclavier II,Yamaha DX Series, ΟΒ-8V