Wondering if anyone has had this problem with the 1.8 firmware?
Basically what happens is while the unit is on, a really bright flash comes out of one of the LEDs around the main knobs down the bottom. It's not the green colour that the LEDs normally emit, it's a really bright white/blue colour. If I downgrade to previous versions, it doesn't happen anymore.
Sometimes it has been the volume, sometimes one of the EQs ... once or twice the gain.
If nobody else has seen it, I might shoot an email through to support.