Hi all;
My 2000 Windstar stereo quit working on the RH side.

It is the factory am/fm/cassette/cd player with the rear headphone jacks & controls. Also no sound out of the RH side on the rear headphone jack.
The dealer said that the stereo itself is hooped and a new one is over $700cdn. I took the van to an auto wrecker and they installed a used one, but it has the same problem, no sound out RH channel. Any ideas?
Thanks!