I think the too cold referred to phase change cooling, I cant remember details as it was a long itme ago and wasnt so interested at the time when i read it.
Most things have an operating temperature window, go below or above and they wont work so well if at all or behave erratically.
I prefer the dry joint or failing capacitor explanations, but was just asking to eliminate the possibility as the type of cooler wasnt mentioned
Cheers