[mikets]

There is a fuse inside the cRIO. It could have been blown. We had two cRIOs that had their fuses blown last season. We called NI and arranged to have two replacement cRIOs shipped 2nd day to us. After we received them, we shipped the broken ones back to them. Of course they took down our credit card number in case we didn't ship them back. If you want to confirm this is indeed the cause, open up the cRIO by removing the screws on the bottom side of the cRIO and you will find a white surface mounted fuse near the dip switches. Put an ohm meter across it. If it doesn't read zero ohm, it's blown. Caution: disconnect power before you do the ohm check.