Greetigns, MCPGA, and welcome to the forum. I am leaning towards a bad ground on the clutch. Not certain, but if it's like a JD mower I had changed the clutch on, if the ground wire connecting to the frame came loose, the blades would cut out and eventually stop working. I thought it was a bad power supply, but all checked out. Crawled under the mower to remove the clutch and discovered the loose wire.