There was no cold water entering the machine.

I replaced the water inlet valve. First I watched a YouTube video on the repair; surprised to learn that you take the machine apart from the front, not the back.A few tips; pull the washer all the way out first; have extra tools in case you have the same problem as I did that the flathead screws holding the old valve on the back were too tight and had a shallow slot; it took several wrenches and pliers to get them turning. Do NOT forget to hook the internal hose back to the valve before reassembling the machine;and pay close attention to how the housing of the washer fits onto the frame, so that you can more easily put it back together. It would be helpful to have a second person for that step. All said, it was pretty easy to replace the part and I probably saved $200 and didn't have to sit around for a repairman.