I went out of town for over a month and turned my kegerator off because I didn't want it running for weeks for no reason (luckily I timed my kegs to be finished right before I left). When I got home I plugged it in. It refuses to get cold. It used to work perfectly, not it's not getting cold at all. Previously I think had been plugged in for about 3 years and never had an issue. Now I'm screwed as I have an iipa and stout that are both ready for kegging. Any suggestions as to why this happened? I find it hard to believe that all of a sudden something mechanical went wrong. It used to work perfectly, unplugged it for a month, now it won't work. The sides are hot and there is a little ice on the plate thing inside on the back. Advise please!