I have two PA800s and they both have a very long funky yellow streak on the inside of the screen. At first, my older board (non warranty) developed this, so I took my NEW board out and after 3 months, it did the very same thing Also have some other deficiencies that are bothersome, so the Korg is definitely not without its problems.

- My lowest Ab went out and then decided to start working again. Talk about a chord recognition nightmare.
- The button +/- advancement for the toggle no longer works.
- Two variation buttons sometimes stay lit together (even though the advanced one is what works)
- My 3rd variation doesn't work all the time.

But I love the board so much, I can overlook or fix.....