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David TurnerAug 5, 2025
What to do if Sharp R-430CK Microwave Oven monitor fuse blows when plugged in?
- TThomas PhamAug 6, 2025
If the monitor fuse blows when the power cord is plugged in, you should check the monitor switch, relay (RY1) primary interlock relay (RY2), door sensing switch and secondary interlock switch before replacing the monitor fuse. Also, if you replace the monitor fuse, you must also replace the monitor switch.