On a Dometic a BAD heating element will not stop the switch to 120 electric. The only symptom is, NO cooling since the 120 element is bad. AS you found out, doing your own diag just cost you money. Don't knock a specialist, since you don't know what you are doing. IF the problem as Old Biscuit mentioned is probably inadequate voltage or a bad 120 supply to the refer then that would NOT be a warranty concern either. You need to verify the 120 at the supply receptacle and at the 2 inputs on the new Circuit board from the 120 pigtail. Doug
