Problems with the low frekvens output in 1 - 3 minuts

[Flemming M]

Hi. Sometimes I have problem with the lowere audio output.
It startede normally, when I turn on the PA4x and my aktive PA system. There are no or very low bass volumen and orther low frekvens sound from ex the piano. I let a' normally styles run and plug out one - by one the jack connect from left and right on the PA4x. Try too change gain and sub volumen on the PA. And after 3 minuttes suddenly came the full sound out of my gear. I can not get the same situation after that - diffecult too find the issue.
Have anyone here have same incident?
I have recieved a tjeklist for the active PA and cables.
Best regards Flemming

[Flemming M]

Hi. Sometimes I have problem with the lowere audio output.
It startede normally, when I turn on the PA4x and my aktive PA system. There are no or very low bass volumen and orther low frekvens sound from ex the piano. I let a' normally styles run and plug out one - by one the jack connect from left and right on the PA4x. Try too change gain and sub volumen on the PA. And after 3 minuttes suddenly came the full sound out of my gear. I can not get the same situation after that - diffecult too find the issue.
Have anyone here have same incident?
I have recieved a tjeklist for the active PA and cables.
Best regards Flemming

Arggh - I have yet have the same eksperience again. Now I am quite sure, that the problem is the Korg. I tjek the sound with my headphonens on the mixer same time, when the sound came out of my PA.

I try too disable the Maxx processesor, but that did not help.

Shall I reeinstall the OS or is it nessessary too send the Korg too repair ?