[Kevin Sevcik]

For clarification, a checklist:

1. You set your team number on the Operator Interface and tethered it to the Robot Controller, then had the robot on and were running it around.
2. You have the Robot Controller radio connected to the radio port on the Robot Controller with a black cable.
3. You have the Operator Interface radio connected to the radio port on the Operator Interface with a black cable.
4. You have the provided AC adapter plugged into a 120V wall socket and the Power port on the Operator Interface.
5. The robot is turned on. (I know it's obvious, but you'd be surprised.)
6. You haven't changed the team number on your Operator Interface after it was tethered.

If all those things are true and the OI doesn't have any lights on it, then it might be something you'll need to talk to IFI about.

EDIT: HIGHLY important. Israel appears to have a 220V power system. The adapter supplied to you in the kit is almost certainly an adapter for 110-120V. Chances are, trying to use this adapter will either explode the adapter or explode your OI, or possibly both. I strong recommend you get in contact with IFI to find a compatible AC adapter that is designed for 220V. I also recommend you hold on to your 120V adapter, but brightly label it. You may need it if you bring your robot to the States.