Eventide told me to send it in. Since it was out of warranty, it cost a $100 flat rate to fix it. It sounded to me like something that they encounter a lot in the product, since my unit was turned around the same day.
Something about a loose cable. To me it seems like a factory defect that Eventide knows about, but won't offer recall status on the product. Too many $100 dollar bills to be made on this.
I think that everyone should build such a defect into their products so that more hundreds of dollars can be made on this stuff, thereby creating more employment.