Audio Systems: Old Kenwood Car Receiver, car receiver, kenwood krc

Question
I have a Kenwood KRC-730 receiver that I installed in my motorhome in 1992.  It is the style that the entire unit slides out of a chassis in the dash(before removeable faceplate days.  My problem is this:  my front channels which are powered by the receiver have lost most of their power.  The rears are fine as they are powered by a separate amp.  I have spoken to a couple of repair people but no one has the proper connector for the receiver which means that the whole chassis has to be disconnected and removed in order to attempt to repair the receiver.  Are there any old chassis available as junk or maybe by some miracle there is an old receiver in working condition that could be found that would save me tearing the whole thing apart.
Any advice would be greatly appreciated.

Answer
JUST TELL THE SERVICE REPAIR PEOPLE THAT THE outputs chip that are on the side of the radio need to be replace
both of them are bad just remove the old one and replace it with new ones and don't test it ,
when out get back plug it in and it will work
they don't need the cables  because they don't need to test anything
just replace the output chips, this only cost $10.00 each

good luck