Was near to a heart attack yesterday.
Got my KPA on Tuesday, programmed few days and everything worked fine, no start problems. Yesterday made many tweakings and prepared for gig (Midi settings a.s.o.).
Then first time the problem with green screen ... starts then after 3rd try with cable of ...
On stage same problem ... green screen .... even 10 tries didn't get it to start.
Fortunatly I read the tips from Armin (shouldn't there be a troubleshooting chapter in a manual ?) and fortunatly I had an usb stick (with latest firmware update and backups) with me.
Started with [<> + Main knob to tuner] to reinstall from stick : message ".. cannot find software ..." (it was in the "OS Updates" folder like set up by KPA). Copied the .bin to main directory (even a notebook was there ) and tried again. Began to install from stick ... after finish (thaught so) message : "unable because of multiple versions..." (there still was the same version in the "OS Update" folder) ... but then he turned on and all settings where still there.
Had a great gig then .. unbelievable tone (played a HD500 before) and in this matter I'm very happy ...
But such startup problems are not bearable I think ...
I will order an UPS of course but this problem has nothing to do with that.
OK, I'm definitely not an engineer, but could this somehow be a grounding issue? Perhaps the KPA is sensitive to it and you're getting a correct ground when the XLR's are used?
Our band technician told me to try in this direction but no combination (for example no cables except the power cable) worked.
I really hope that will come a solution for these problems!