Jaguars do not enable

[Gary Suter]

We have been having a lot trouble with our robot lately. We were running our practice robot, and it was driving perfectly, when all of the systems died very suddenly. When enabled, the jaguars would not receive any signal (flashing yellow LED). The first thing we did was to write a new code, and when we define and run one motor at a time, that motor will work perfectly. This can be done with any of our 7 motors. When we tried to run more motors, we can define up to four jaguars, and all of them will run. As soon as we define a fifth jaguar however, even if we do not set the speed, none of the jaguars will receive a signal when enabled. Does anyone know what might cause this?