Thanks for the reply. And there were quite a few discolored resistors on the old board including ones below the J2, as well as relays sticking. After reading the sticky about this issue, I replaced the motherboard and the fan. When I noticed what I had described, it was an empty, 60* box, and I think I may have just been hearing the the refrigerant flow. I checked it over the last few days and the temps have stabilized within a few degrees, and the fan sounds steady. I haven't touched a residential refer on a regular basis, in almost five years. If you feel that my thinking is flawed on this, please feel free to let me know. Thanks again for the reply.