Funny how the freezer still registers at 0F with no evaporator fan. And the refrigerator is at 34F for now until the ice build up blocks the cold into the refrigerated section. Frost is beginning to form, which means the old timer is also not advancing. The only thing I can think of is that both defrost timers are bad. After manually setting them to defrost, the cycle will work for about 15 minutes, then the compressor will kick in and ice will start to form on the coils. As I mentioned, neither timers will cycle back to defrost.