Blowing the CIA chips (the 8520 or 8520A) is a very common problem regardless of the model involved. They are pin identical on the A1000/A1500/A2000/A500/A3000 and can be even taken out of a junker if you come across one. I'm sure the guys from amigakit.com will chime in any second now... If you in fact need another WCS board just ask around here. I think I might even have one around somewhere.
Good luck getting the old lady going!