Hey,
I have an old Akai M430 with 4 speaker connections, but only one still works. Does anyone knows how I have start to repair these connections?
View attachment 18962
Disconnect power, attempt to power the unit on. (This will help drain capacitors, but will not drain the all!)
Take the main housing off.
Take a look inside to determine cause of damage.
It could be a physical problem with the speaker terminals... or with the board that they are mounted to.
Regardless a little spare wire, and a soldering iron should be enough to get you going again. Just share picture prior, and if you are unsure don't do it.
*Warning. A/V equipment usually houses large capacitors that can pack a nasty whollup! More than enough to stop a human heart.. and unlike Batteries, or Mains lines in a house these things can put out many more amps!