试试重置PS3的声音设置
这是老外的解决方式
I fixed it too, I had to reconfigure the sounds settings for HDMI. I don't know why, the settings changed for no reason. But now it's working!
@ByteJunk go on the ps3 systhem configuration and then on sound settings, and let the ps3 reconfigure the sound automatiqualy. (Sound settings > 1st option (i don't remember the name) > then choose one of the 3 options (HDMI and two others) and then Automatic. )