> The LEDs light up (dont blink just light up) and when I turn
> it off and on again different LEDs light
> up, sometimes many, sometimes few...

Marco - I agree with Ben's recent post on this topic. The most common reason
for the sort of behaviour noted is if something is a little bit awry with the
power supply. The "DC OK" control is definitely one of the items that I would
look at first.

The Polaris is a very servicable keyboard - so if you (or a friend) is
electronically inclined it can almost certainly be fixed.

That being said, they are up for sale quite regularly, so if it is a low/no
effort task to return it - that might be the best way to go (and then pick up
another one at a later date).

David