Cat 277b died

I just picked up a 2005 Cat 277b yesterday. Today I took it off the trailer and tried moving a small pile of dirt. It died with the arms up and bucket in full dump just off the ground. I turned the key off and on, and got nothing. Tried moving every lever, pushing every button and switch. Nothing happens. Had to pull out the back window and crawl out. Acted like the battery was disconnected. I checked the battery and main breaker, have power through the breaker. That is as far as I got. I...

Cat 277b died

Cat 277b died