Hi. I've got an Xperia Z here that I managed to get a good deal on because it doesn't play sound from the loudspeaker. Everything else works absolutely perfect including the headphone port. I've tried putting the board in another z and it still refused to produce sound through that loudspeaker too and another board in this z made it play sound. Does anyone have any idea what could cause this? I know when stuff like that happened psps years ago they had little fuses you could bridge but I can't find any info at all about the z motherboard.