I have a 200 763 Advantage series skidsteer. For the past year+ I have been having an issue with it losing all electrical for a split second which locks the brake up then reboots the electrical system. In running tests, it reacts the same as when I turn the key off then right back on while driving. I have gone through all the fuses (replaced all that had corrosion), relays (replaced the main power relay just in case), and most of the wiring connections. There seems to be no relation to idle speed, temp, or length of use. In the past month it has got to the point that when it reboots, it will reboot multiple times within seconds.