Hello there. I'm Lukasz from Poland. I'm using Kurzweil PC3LE6 series. I play at home, but also on stage - small, but always something .

BTW,
I experienced "blinking" problem with this serie. Solution was quite easy. Change weak components in power supply inside the board (capacitors, resisitors, etc.). Now after 6 months I can say that the problem seems to be solved. At least for some while. The guy who made this activity was disappointed about quality of parts assembled. Hope it will help someone having the same problem. In my case was the right solution.
Thanks.