Ahh - That doesn't sound too promising.
The thing is, though.. - Sometimes these stripes doesn't appear, and the splash-screen (welcome screen) looks normal.. but nothing happens.
In my experience (with other kinds of electronic and/or computer devices) if the cpu, gpu or display hardware was malfunctioning, the problem would be fairly constant..
So I'll keep my fingers crossed, that someone in this forum has the solution
If not, this is goodbye to Pioneer products for me.. 1000eur for a product that last for only 3-4 years, is not worth it.