So I took in this Sony that the owner said had very quiet sound, didn't
bother to try it out, MPX module had leaky smelly caps so I replaced it,
resoldered the IF module, still no sound, did more resoldering, still no
sound, then finally I decided to poke around in the menu since I happened to
have a remote from an identical set, speakers were turned off in the setup
menu, turned them on and the sound works. Good thing to keep in mind for
other repairs, I felt stupid when I discovered that.