[Yuya shifts his flashlight to under his arm and takes the wrench with a quiet "Thanks." He manages to open up the casing after a bit of effort and starts squinting at the speaker's inside parts.]

Yeah, some of the wiring is burnt...I think something could have short circuited. Maybe we should check the power supply?

[He's not entirely sure about the short circuit, but the fact that he can make the connection is a start.]