location of high voltage capacitor. Unit was working fine yesterday. Put in frozen chicken pieces & set on defrost for 2 lbs. OK from 9.5 to 5.5 min when unit emitted groaning sound & burning smell as if some electrical problem had begun. Turned off immediately, and later attempts to restart resulted in loud noise and smell. No fan sound can be heard. Burning smell comes on quickly. Purchased new in about 1988,