Looks like my PC3LE8 reboot woes are over. The keyboard was at the repairman's, and according to him, it was the power supply device. It claims that it was not a system failure published in the bulletin 910558-001 — June 2013. That surprised me a lot since the keyboard manifestations were very similar to the description in the bulletin, and also to the great video clips I watched.
So far, everything works as it should, at least what I've tested, except for the first pad on the right, which only turns on in red. It works in all setup modes, but in red color. What could it be, are the blue and white LEDs burned out, or is something wrongly connected. As far as I know, it is software controlled from the OS.
Any suggestion on this topic is welcome.
As for the reboot, a longer period of time (perhaps a year) is needed for a final opinion.
I hope it doesn't happen again, because it's a very good instrument.
Thanks to @cecchino for nice wishes. Thanks for all your attention.
Thank you very much.
Yes, I am very happy, after 5. years spinning with restart. I will not get overly excited in advance, as a long period is needed to reach a final conclusion.
How are you?
I wish you all the best.