crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 nbecohen

crwdns2934249:0crwdne2934249:0:

I had same problem - is related to interlock switch wiring.  when u close the door that switch completes a safety circuit that  engages the transformer and the magnetron. something in that path is  shorting the ac hot leg to ground

crwdns2915684:0crwdne2915684:0:

open