Quoted from PunishersLEMC:Went to power on and won’t boot, I reseated connectors here are the lights that won’t come on, anyone know what or if it could be a fuse and which one. Wpc board see pictures for lights on- no boot no GI only light on dmd
The power light (D21) is lit so you have 5V to the board, the CPU board only needs +5V to boot so fuses are not going to be an issue here. Its a best practice to never press chips into these type sockets with the board installed in the machine as the board is not designed to flex, its always best to install these with the board sitting on a hard surface.
I would pull both boards you installed chips in and verify no pins are bent over and pressed against the underside of the IC.