I came home the other day to discover both my kegs in my small homemade kegerator were frozen solid and my co2 tank was empty. Could a leak in my co2 lines have caused this? Or any other guesses. I've thawed them out and refilled the tank, the fridge is holding steady at 42 or so. Now, to test all the connections and recarb. Sigh, no homebrew tonight. Thanks for anyone's help!