This will sound really stupid, but I do not understand how this trigger is supposed to work. The manual says to turn on the power amp with the front panel switch. I get a blue light indicating the amp is "on". Turning on or off the trigger switch has no effect. I am doing this with and without the trigger cable hooked to my amp. Is the amp broken? It seems to me that when I turn on the amp with the front switch, it goes into standby and begins to operate when the Yamaha is on and sending a signal. I thought by having the trigger switch on, the power amp would be off unless my Yamaha was on and sending the trigger voltage.