When Sweetwater heard that my two boards were bad, they started testing the ones they had before they sent the third one out. Of the several they had in stock, they found one more dud.

The ones I have are working great. I've been gigging with one for over a month now without problem. Fingers crossed.

I think that Yamaha USA should test these extensively before they get shipped. Make sure that all the buttons do what they're supposed to. Make sure that the wheels work and the USB works. It might take 15 minutes per keyboard, but it will save the company a lot of embarrassment and aggravation in the long run.

Beakybird