The machine doesn't power up. The power cord is good and there it power to the control board. I unplugged and re seated all of the plugs on the control board. I don't see any lights on the control board with power applied. The Cabrio service manual says the next step is to replace the User Interface. If that doesn't fix the problem, it says to replace the control board. Is there any way to test these parts in lieu of spending $400 to buy two control boards? Have I missed something? Thanks, Joey.