The Samsung CM1529A Oven has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Samsung might be giving you.
Improper input power frequency, ventilation motor failure, and magnetron overheating.
Overheating inside cavity due to no load or little load and air ventilation blocked around exhaust area.
Memory IC (EEPROM IC) failure and MICOM failure.
Main Relay (RY1) or Power Relay1 (RY2) failure, loose lead wires of relay, Primary or Monitor S/W failure.
Defective high voltage components: H.V.Transformer, H.V.Capacitor, H.V.Diode, H.V.Fuse, Magnetron.