Korg Forums

SeedyLee · Posted: Tue Jul 14, 2020 2:40 pm Post subject:

I love Korg gear, but I've only owned a couple of Korg workstations - the Triton and the Kronos.

To me, I don't think the Kronos 61 is as well engineered mechanically as other keyboards I have owned. That being said, it hasn't failed in nearly 9 years. I also wonder if some of the engineering decisions on the Kronos specifically are down to weight.

The Triton LE I had seemed well engineered though, and on par with other workstations I've owned. All the other Korg products I own are still going strong.

The Korg arrangers are engineered in Italy by a completely different team to their workstations.

I think it's an interesting approach with the power supply. Power supplies are one of the costliest parts to have certified for different markets, so having an OEM power supply that's pre-certified makes sense. I guess it makes it easy to replace if it breaks - the internel switch-mode power supply for my Kronos is rather hard to get ahold of 10 years after release.
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Current Equipment:
Korg Kronos 2 88, Reface CS, Roland JV-1080, TE OP1, Moog Subsequent 37, Korg ARP Odyssey, Allen & Heath Zed 18, Adam F5, MOTU MIDI Express XT, Lexicon MX200 & MPX1, Yamaha QY700, Yamaha AW16G, Tascam DP008ex, Zoom H6, Organelle, Roland J6 & JU06A

Previous: Triton LE 61/Sampling/64MB/4GB SCSI, MS2000BR, Kronos 1 61, Monotribe, NanoKontrol, NanoKeys, Kaossilator II, Casio HT3000, Roland VP-03, Reface DX, Novation Mininova, MPC One

GregC · Posted: Tue Jul 14, 2020 2:43 pm Post subject:

get over to " Top 50 Enhancements " topic and add that power supply situation to the list.

Plus anything else that is lacking or questionable on Kronos
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Kronos 88. MODX8
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longeze · Joined: 11 Sep 2019 Posts: 9

@DeltaJockey Nice username! I assume you're a pilot then? Me too - choppers & fixed wing Wink

You're living the dream though, it has to be said Smile

To your question, since the PA900 power supply is internal, it doesn't have prongs protruding from it for connection to a wall receptacle. I made no attempt to open it or measure ripple etc to determine anything further about the design, so I can't speak to that, other than to say that it's possible that you are correct about it being a compact switch-mode supply.

I unfastened the 2 retaining straps, and was a little surprised about it's light weight. Given that, along with the fairly substantial current requirement of the internal power amplifier, I would've expected a significantly heavier transformer from an analog DC supply, which all goes to support your assertion of it being a switch mode supply.

rickster1 · Posted: Wed Aug 19, 2020 3:45 am Post subject:

All this talk about power supply failing leads me to ask about my 1st gen Kronos 73, which is currently at a repair shop... the K would be on, I'd be working with it; & suddenly the power goes out, the screen black. After a couple of these, it eventually wouldn't make it thru the boot-up without power failing.

So....DeltaJockey & others here... Is this a power supply problem?
The keyboard is over 8 yrs old, & I've used it a lot.

Thanks for your advice.

Liviou2004