Mike, thanks for your ideas. The last time the PWR ON button worked was at a QTH I stopped at on the way to our ultimate destination. I turned off the equipment, put it in my trunk, came the rest of the way, and the PWR ON button has never tried again. In case the head to rrc cord has failed I ohmed it out. Found continuity between 5 of the 6 pins. Thought this was significant but looking at the clear plugs in a bright light showed both only had 5 wires in use. On the TS-480 schematic the non-connected pin is simply a second ground. There is a "U" wired on the back of the jack which apparently negates the need of a 2nd ground. Have ordered a new 6P6C cord anyway. The straps ought to be OK because the system worked fine until I disconnected it and brought it here to my ultimate destination. The COM0 baud is 57600, yes I'm using program mode 5, SIP PW is correct with no spaces, the boxes will Auto Connect. 73, Art