I had a Sansui 5000 that had a massively blown channel according to the guy I sold it to for $15. I didn't want to bother with it due to the driver boards being hardwired and mounted vertically in a cramped case. He said there were blown traces and all sorts of damage. IIRC there was an upgrade that solved these issues.
If this is a similar receiver (early solid state with *three* sets of speaker jacks), then yeah, its worth the trouble.
Not a particularly valuable piece (should you ebay it). Early solid state pieces just don't fetch much. The solid state version of the famous Fischer 500 receiver fetches $40 or so while its tubed brethren commands ten times that.