I can't remember but does the screen come on with just USB and no battery attached? Was using it in another box with a lipo. Switched boxes, board holder and was about to solder up dual 18650 sled decided to hookup to escribe first to change to 2 cell and the screen doesn't come on. Escribe reads, uploads and downloads fine? Please help I am so frustrated I want to throw the whole thing in the trash!