Very frustrating and annoying.. FREEZING issue PA800

Simon · Post by **Simon** » Tue Sep 09, 2008 1:49 am

Rob Sherratt wrote:Hi Graham,

Is it a UPS with a lead acid battery inside? Weighs about 20 to 25 lbs for something suitable to protect a Pa2x and sound system. Costs about $150. You would know.

Sorry to say it, but a "surge protector" weighing less than 2 lb does nowt worth having. They protect against 1 surge and then the protection element fails and there's nothing to tell you it's failed because it fails open circuit.

For factory installations we use huge MOVPE semiconductors as overvoltage/ lightning surge protectors. We have to fit them with failure detection and alarm circuits, since we have to renew them on a regular basis, often every time there is a lightning storm in the vicinity.

Protecting a circuit against over-current and against insulation breakdown is easy and cheap to do. Protecting against over voltage spikes is very difficult (and expensive). Unfortunately it's the over voltage spikes that destroy most computer processors. And LED's for that matter.

Hi Rob,
Do you think this Power Surge Protector will do the job? I just got it today for my equipments. Please check it out.. Thank you.
XX to tt

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Simon · Post by **Simon** » Tue Sep 09, 2008 3:31 am

Deleted the new sounds and a few more and still the same especially when playing fast..It's like the CPU is too slow ....I am also using the new power surge protector. I don't know what's going on but sure I'm pissed.......... playing at a wedding next Sat. don't know what to do.............

Rob Sherratt · Post by **Rob Sherratt** » Tue Sep 09, 2008 7:25 am

Simon wrote:Hi Rob,
Do you think this Power Surge Protector will do the job? I just got it today for my equipments. Please check it out.. Thank you.
XX to tt

hXXp://cgi.ebay.com/New-100K-Protection-Power-Surge-Protector-8-Outlets_W0QQitemZ330269367538QQcmdZViewItem?hash=item330269367538&_trkparms=72%3A1163|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3911.c0.m14

Hi Simon,

I would buy it for the $100,000 equipment potection guarantee alone. I can't believe the guarantee would pay out if you popped your Pa gear though. How would you progress the claim and prove the cause? How would you establish that it was not a manufacturing fault?

Also I don't know for definite if overvoltages are the root cause. The saga continues. It's just that I'm suspicious when LED's are blowing as well as the processor locking up. This points to voltage regulation or noise spike problems. Let's continue to share our findings? Keep a date log each time an LED blows?

sandy39 · Post by **sandy39** » Tue Sep 09, 2008 8:50 am

Yes Rob, if you use a UPS it will definitly help you... I 'compulsorily' use a UPS on my Korg and Roland from day 1 whether being used at home or for playing live and never had any such problems. ... and not only on my musical instruments but on my lcd tv and music system as well...

It is very very safe. Adding a UPS in line reinforces my confidence.

SP

Rob Sherratt · Post by **Rob Sherratt** » Tue Sep 09, 2008 11:20 am

Just to recap, "the freeze" is defined as a Pa2x OS1.11 or Pa800 OS1.60 which during live playing locks up - possibly with notes stuck on - and you have to turn power off because nothing else will reset the keyboard to working state. This is a serious problem and it will be fixed as soon as the root cause can be proven and recreated.

Can anyone else recreate the failure condition and try to explain what triggers it? In which case, please contact me in private by PM or Email. It would be better to keep any speculation about this in private until the solution is in place.

I am collating together everyone's information and I will send it where it matters most

. I'm sure a solution also for the LED problem (which is definitely hardware related) will be provided very rapidly. I did contact Korg about it and I was told that it is receiving attention.

Graham, Pa2x Simon,

You each have a PM from me asking for your help.

Simon · Post by **Simon** » Tue Sep 09, 2008 8:57 pm

Rob Sherratt wrote:Just to recap, "the freeze" is defined as a Pa2x OS1.11 or Pa800 OS1.60 which during live playing locks up - possibly with notes stuck on - and you have to turn power off because nothing else will reset the keyboard to working state. This is a serious problem and it will be fixed as soon as the root cause can be proven and recreated.

Can anyone else recreate the failure condition and try to explain what triggers it? In which case, please contact me in private by PM or Email. It would be better to keep any speculation about this in private until the solution is in place.

I am collating together everyone's information and I will send it where it matters most . I'm sure a solution also for the LED problem (which is definitely hardware related) will be provided very rapidly. I did contact Korg about it and I was told that it is receiving attention.

Graham, Pa2x Simon,

You each have a PM from me asking for your help.

Rob, please check your PM.

PraiseTheLord · Post by **PraiseTheLord** » Sat Oct 18, 2008 3:15 pm

Well, after such a long gap. I thought the issue had gone away. I was playing Happy Birthday using Slow Waltz 2 and selecting different Performances from the Strings & Vocal (ie factory styles, performance settings and sounds). It happened again. Just a continuous tone that would not go away until I rebooted!

BasariStudios · Post by **BasariStudios** » Sat Oct 18, 2008 4:47 pm

Did you try s**t+StartStop button?

PraiseTheLord · Post by **PraiseTheLord** » Sat Oct 18, 2008 5:02 pm

I tried the Start/Stop button, do you mean Shift & Start/Stop button. I did not try that, what does it do?

Graham

BasariStudios · Post by **BasariStudios** » Sat Oct 18, 2008 5:05 pm

That stops the unwanted noise, you dont have to reboot synth for that.

PraiseTheLord · Post by **PraiseTheLord** » Sat Oct 18, 2008 6:37 pm

Thanks, I will definitely try that. Is this a new finding or have I missed it?

Graham

TommyF · Post by **TommyF** » Sat Oct 18, 2008 7:42 pm

It's in the manual. Do a search for "panic". Most MIDI based instruments have a panic button and the Pa2X/Pa800 is no exception.

Kind regards,
Tommy

macboy · Post by **macboy** » Sat Oct 18, 2008 8:52 pm

A hanging sound can also be stopped by going to USER and clicking on the hanging sound if shift+stop doesn't work

Rob Sherratt · Post by **Rob Sherratt** » Sat Oct 18, 2008 11:50 pm

In the case of the Pa2x lock up failure mode, SHIFT + START/STOP does not work. It appears that all the key and button and LED scanning circuitry locks up. Some LEDs glow brightly some stop working. The only thing you can do is to turn the power off. I'm aware of this problem due to the 3 times it has happened to me.

If anyone else with a Pa2x experiences this "total lock up" problem, please reply on this thread. I will collect all our serial numbers and forward the information to Korg.

Best regards,
Rob

Simon · Post by **Simon** » Sun Oct 19, 2008 7:08 am

Rob Sherratt wrote:In the case of the Pa2x lock up failure mode, SHIFT + START/STOP does not work. It appears that all the key and button and LED scanning circuitry locks up. Some LEDs glow brightly some stop working. The only thing you can do is to turn the power off. I'm aware of this problem due to the 3 times it has happened to me.

If anyone else with a Pa2x experiences this "total lock up" problem, please reply on this thread. I will collect all our serial numbers and forward the information to Korg.

Best regards,
Rob

Rob, Did I miss anything?? what about "serial numbers" You never mentioned that in your e-mails... Please let me know.
Thank you,
Simon

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Very frustrating and annoying.. FREEZING issue PA800

Your help needed please

Re: Your help needed please