A while back my dryer stopped heating and now just runs with cold air (1yr old Frigidaire). I changed the breaker (an old BL loadcentre 40 amp) for a new 40 amp breaker and hadn't quite put it in firmly but when I put it to on the dryer finally had heat. I put the front breaker panel on (with the breaker loose) and heard a humming sound so I losened the panel and eventually took the front off again. Funny thing is now the dryer blows cold. I finally reseated the new breaker properly so it is firm but can no longer get any heat.
My question is could there be something now wrong with the new breaker??