MacBook Pro not turning on after repair

Hi all, I recently had my MacBook Pro sent in for a keyboard repair, which was covered by Apple. I just received it back and tried to turn it on but the screen will not light up. I plugged it in thinking it might just be a dead battery and I heard the chime signaling that it’s charging. The screen flickered for a second and went black again. I’ve tried turning it on multiple times but nothing works. Does this mean that the repair company (CSAT Solutions), messed up on something else and it needs to be sent back?