wires broke when removing master station from wall.

the blue and black wires from the bottom (phono) male plug on the bottom of the unit face broke off their soldered joints and have no idea which solder points to connect to. Also one black wire broke at a solder joint which goes to the blue male (main) multi-pin plug. When attempting to get the unit operating by soldering at misc. terminals, the radio and red operating light quit(as well as the intercom). The initial problem was the intercom would not work as intercom or radio to any of the other rooms of the house. There was a loud squelch sound and then everything quit. Any idea on cost to repair this? Thanks

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