[kooler]

This is an age old problem since refrigeration began; you will need a Pro to fix your beer fridge and that's only if you can find one that likes your preferred brand to make it somewhat inexpensive... Personally I like Miller Lite and have my own kegorator neatly handy... You have made the ultimate sin in the refrig world of using a sharp instrument to remove ice from an evaporator coil.. Next time use a hair dryer or just unplug the unit for a few hours with door open.. As for R12, there are replacement refrigerants available to a Pro that are compatible and cheaper... You have to be EPA certified to obtain these compatible refrigerants... The mineral oil used with R12 will not work with the newer 134a refrigerant... Hope this helps, kooler