Korg Forums

Dan_ · Joined: 29 May 2012 Posts: 36

Hi, my PA3X V1.60 shut down 2 times this afternoon as I was singing live !!
Is that a bug or something else that is known, power supply weakness, idle button too sensible?
What to do as it's random, it's very odd
Thanks for help

AntonySharmman · Posted: Sun Feb 17, 2013 11:57 pm Post subject:

Though I could ask you if "auto power off" is disabled ? still makes no sense since even is "enabled" , Pa3x should
not shut down while playing , but after a long time that no key is pressed !!!

Also this is the third time I'm aware of this malfunction and really makes me wonder if this wasteful function contains
a buggy script that must be seriously considered by KorgPa !!!
_________________
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

duby2

my pa3x v160 , did the same in the middle of a wedding ,, and the harmony was act up , stuck note or voice . try loading in a new set to see if that change thing ,,, but no ,,, so i did a 160 reset 3 time , no good after that ,, but after taking the battery out and keep it out ,, so far all is good ,, i do not know what it is ,, and yes the auto power is off,,, disabled ,,,
_________________
The Gold Standard OS 2.2
Pa4X, Pa 1000, Pa3x, Pa800, Pa80, i3

Dan_ · Joined: 29 May 2012 Posts: 36

AntonySharmman · Posted: Mon Feb 18, 2013 3:03 pm Post subject:

I really do not know yet ... just speculation of software combined with hardware switching weakness !
For time being I can't reproduce it ... Future will determine the rest !
_________________
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

Dan_ · Joined: 29 May 2012 Posts: 36

AntonySharmman · Posted: Tue Feb 19, 2013 2:39 am Post subject:

Dan_ · Joined: 29 May 2012 Posts: 36

Well ok KORG, or whatever you are when reading these lines, I simply don't care if there's something wrong with the hardware or the software.
As lots of us are experiencing the same odd issue, we do need an update or whatever you call it.
It's simply unacceptable to pay 3200 € for a - let's call it "PRO" for one minute- keyboard that shuts down randomly many times as you're singing before a 500 people just like me last week end !!
KORG, what do you take us for ? Some of us are PRO and paid for a PRO solution. We 're not playing with a Farfisa right ?, that's why we have trust in THIS keyboard, don't we ? Unless it was not worth it to do so ?
Please do a correction, an update quick, very quick!!!
I know there are other bugs, but this one is just UNBELIEVABLE !!!!
Thanks for considering seriously this post in order to resolve this issue.

To those who are reading this post, please make this post going up and up until it will be resolved, because you are concerned believe me, even if you have not expenrienced it yet, because it occurs randomly !!!

deanspy · Posted: Wed Feb 20, 2013 5:21 pm Post subject:

It is more likely to be dirty power. This is the surprising answer for many hardware and software problems.

I never leave home without a proper power conditioner and voltage regulator. If you are using a cheap UPS, your problems could be doubled by square wave supply.

Spend the money.

http://www.furmansound.com/product.php?div=01&id=P-1800AR

or something similar. This is the 120V version.

I have had equipment and computer problems disappear from venues after using this product.
_________________
PA3X 76
Excelsior MIDIVOX
MacPro w/ Logic 9
MOTU 896mk3
Spark, Maschine, KOMPLETE
Other bits and bobs

Dan_ · Joined: 29 May 2012 Posts: 36

deanspy · Posted: Wed Feb 20, 2013 6:42 pm Post subject:

AntonySharmman · Posted: Wed Feb 20, 2013 7:39 pm Post subject:

Rob Sherratt · Platinum Member Joined: 16 Apr 2007 Posts: 4590

Hi @Dan_@

It's definitely a great idea to use the UPS especially in countries like Greece where power interruptions and power overvoltage spikes are the norm and not the exception. Antony and I know about this the hard way Smile

The UPS will save the keyboard (and other appliances like TV's, Computers and sound systems) from voltage spikes and whiteouts in the mains supply that would otherwise cause a shutdown or permanent damage. Before using UPS's as standard on all our outlets, we "lost" two computers, one large screen TV, one music keyboard, one office PBX and six office telephones. The damage was caused in all cases due to voltage surges in the mains supply.

I'd be very pleased to learn of anyone with OS1.6 who is using a UPS and then the keyboard shuts down unexpectedly. This would point to a serious design problem in OS1.6 or possibly in the hardware of the Pa3x. Then the next test would be to revert to OS1.5 and see if the problem recurs. If it does, then it is more likely to be Pa3x hardware, if the problem does not recur then it seems the OS1.6 upgrade is the culprit.

If there is a better diagnosis (if it is indeed OS1.6 that is the culprit, I'm sure the forum Admins would publish a recommendation for everyone to downgrade to OS1.5 and would then persuade Korg to fix OS1.6.

Thanks,
Rob

deanspy · Posted: Wed Feb 20, 2013 8:30 pm Post subject:

Rob Sherratt · Platinum Member Joined: 16 Apr 2007 Posts: 4590

Hi Dean,

Hope you and family are keeping well in Canada.

Your caution about ultra-cheap UPS supplies with square wave output is welcome. As you rightly say, there are many cheap UPS supplies that will work fine with a computer but which have a "Square Wave" output that will generate a lot of unwanted mains noise interference when used with audio equipment such as the Pa3x.

But let's not "throw the baby out with the bath water here", nor upset Antony whose skill and advice as a developer is invaluable on this forum.

We are recommending any small UPS with a rating above 400VA and with a "Pure Sine Wave" output. Yes, the buyer will need to get hold of a full printed specification and check that it says "Pure Sine Wave", and that it has the right plugs and sockets and output voltage rating for your country.

e.g. I can confirm from checking APC's web site that the APC "Smart-UPS" series offers "pure sine wave output on battery." For use in Europe at 240V AC, this model is suitable for the Pa3x and costs 139.99 GBP from Amazon:

http://www.amazon.co.uk/NEW-APC-Smart-UPS-620VA-230V/dp/B00079VLM0/ref=sr_1_12?s=computers&ie=UTF8&qid=1361397635&sr=1-12

If anyone finds a cheaper one with "pure sine wave output" please post your findings here ...

Best regards,
Rob