NickAir

Good morning to all and thanks for the support in so such easy way to access. We have an V700-T20BJ installed on a machine, this morning at the switch on the screen is black. We verify the presence of 24V at the supply, but it doesn't start. The supplier of the machine think that a pick of voltage could has damage it. Obviously could be a possibility. There is no way to try to resume it? Some fuse inside it or something to open and check. Thank for any suggest. Greetings