I think I solved the "Loading" problem on JVC DR-MV1. There are two power black connectors from the power board in the middle between the main and power board. . These are the ones made of bare wire. One is near the rear of the machine and the other in around the middle front to back. Unplug the machine. Unplug both connectors from the main board. I let machine sit for several hours. Plugged back in and it worked