I have some Wyandotte eggs that are presently half way incubated.
A couple of days ago I got up for a leak about 2 in the morning and discovered the incubator was cold and the eggs were cold to touch, it was the AC DC adapter that was faulty.
I lost 5 eggs that I know of, the rest are...
I'm still here and still keeping chickens, in fact I'm getting a load more as I have been diagnosed with prediabetes and consequently I now eat a minimum of eight eggs a day. : )