Well, here is my problem since last Saturday (in the middle of a gig!!)
Ah ya, a little info upfront! Bought the PA800 a month ago, used but great shape, or better, really like new!
It worked perfectly until above mentioned moment. Must say I am not new to Korg generally, had once the i30. In these last 4 weeks I did a lot of work on it from scratch, started by formating and reloading newest OS from Korg website. Mixed my own set from a couple different ones, never ever loaded anyone's global settings! Spent at least 200 hours to prepare it for it's first live use. Still have my old Roland EM2000 untill I'll be 100% sure that it's got adequate replacement with the PA800.
Forgot to mention: For whatever reason (out of my mind) I did not take my upper Triton LE with me, nor my EM2000, which never let me down in 9 years of live use! Like never done before, I simply trusted my "new" PA800 to finish the job! What a wrong decision that was, lol!!!!
Now, here's what happened:
The first 2 hours into live play, everything worked just fine.
After singing the first part of a song in D-Mayor I decided to transpose to E-Mayor. That moment the hell started. Something just didn't sound right lol.
In a split second of confusion (had already started singing in E) I decided to go back to D. Pressed both tranposer buttons at once to make sure it goes back to D Mayor. Had no problem to switch back with my singing, as I am a musician now for 35 years exactly.
But again something just still wasn't right. The left and the right hand were not in the same tonality. The left arranger side did switch back correctly, I felt it and could see it in the display!
HOWEVER, the right hand side was still caught up in E-MAYOR.
Panicking, I transposed 2-3 more times back and forth. When the left side goes correctly to D, the right side still remains in E. So, transposer buttons work for sure, just the two sides are 2 semi tones apart.
Somehow I finished the song lol and announced a break.
Now, during the break first I switched the keyboard off and back on, being pretty sure that would do it. Nope, it still was the same. Checked all available parameters in styleplay and global, everything was as it should be, but still after trying different styles, performances and sounds, the problem remained. Imagine that feeling, 3-4 more hours to go, and no 2nd keyboard with me.
Okay, no panic.
1. Decided quickly to reload global settings, sounds and styles. >>> same story!
2. Reloaded the my whole set including samples >>> same story!
Became desperate, as people started getting nervous, lol!!!
Finally decided to announce a longe break because of technical problems!
Of course, I had everything possible on my memory stick with me, sooo
3. Formatted the whole keyboard, reloaded OS2.01 and factory settings!
At that point tested quickly>>>>>> of course lol, SAME STORY!!!!!
Just IMPOSSIBLE right? Now, I started panicking haha!
4. Reloaded my set >>>> same story!!
Ok, at that point I decided to go with what was available.
Because of my experience I somehow managed to sing and entertain for another 3 hours, don't ask if I was sweating???

Another problem showed up once I continued my play:
From time to time, always just for a cou[ple seconds or even just one sound the right side switched back to where it belongs. Which really started pissing me off.
Imagine, hold let's say G minor in the left hand, singing G minor, while playing A minor with the right hand, where from time to time the solo sound or background strings switch for an instant back to G, then again back to the wrong A!!!!!
The only bright side, the longer I played, the more rarely it switched back and forth. The last hour it "finally" stayed in that 2 semi-tones apart condition. At that point I at least depend on it.
SO, today I spent 5 hours on it. Formatted, reloaded OS again, reloaded my set, tried out a couple different sets including their globals, which I always avoided in the past.
Result: SAME OLD STORY (becoming a boring story!)
Went a 100 times through all parameters and such, read the manual up and down, to finally give up lol !\
One thing I am figuring: This can't be a simple problem!
YOU GUYS ARE MY LAST HOPE!
As I said, I do know a lot about keyboards, including the PA800!
But still, I'm out of ideas now!!!!
I am new to this forum, registered today out of desperation! But have been following the forum passively for over a year now, and I know there are some real magicians here, knowing the answer to almost every problem!!!
Really hopeful to get some help here!!
And really THANKFUL for any peace of advice!
THANK YOU VERY MUCH!!!!!!!
civias