What to do if my Sears Microwave Oven produces little heat?
If your Sears Microwave Oven seems to be running but isn't heating food properly, it could be due to a decrease in power rating voltage. It is suggested that you contact your local electric power utility company or a qualified electrician. Also, the issue might be with a defective PCB assembly or a defective magnetron, which would need replacement.
Why is my Sears Microwave Oven sparking?
Sparks in your Sears Microwave Oven can occur if you're using metallic ware that touches the oven wall. Avoid using metallic ware for cooking, unless specified in the cooking guide. Also, do not use ceramic ware trimmed with gold or silver powder, as any type of cookware with metallic trimming can cause sparks.
Why is the output power of my Sears 721.66462500 Microwave Oven too low?
If the output power of your Sears Microwave Oven is too low, it might be due to low AC input voltage. Ensure you are using the microwave oven at adequate line voltage.
What causes no microwave oscillation in a Sears Microwave Oven when the lamp and fan run?
If your Sears Microwave Oven's lamp and fan motor are running, but there's no microwave oscillation, it could be due to several defective components. These include a defective PCB assembly, high voltage capacitor, high voltage transformer, high voltage diode, or magnetron. Each of these would need to be replaced.
What to do if Sears Microwave Oven display shows figures but doesn't start?
If your Sears Microwave Oven's display shows all figures but the oven doesn't start cooking, even when the START pad is touched, there could be a few reasons. This could be due to a defective secondary switch, PCB assembly, fan motor, or oven lamp, any of which would need to be replaced.
How to repair a Sears 721.66462500 Microwave Oven when the display is blank and it won't start?
If your Sears Microwave Oven isn't operating, the display window shows no figures, and no input is accepted, it could be caused by a defective PCB assembly, a defective high voltage capacitor or a defective high voltage transformer. In each case, the defective part should be replaced.
General| Brand | Sears |
|---|---|
| Model | 721.66462500 |
| Category | Microwave Oven |
| Language | English |
Procedures for adjusting door latches and interlock switches for proper operation and safety.
Measuring microwave energy leakage to ensure compliance with safety standards.
Safety cautions for service personnel during microwave energy leakage testing.
Procedure for measuring microwave energy leakage using a survey meter.
Instructions for measuring microwave leakage after component replacement with the outer case removed.
Procedure for measuring microwave leakage on a fully assembled oven.
Procedure for measuring the microwave oven's power output using a water load.
Details on the interlock mechanism and switch mounting for microwave safety.
Procedure to test the primary interlock switch continuity using an ohmmeter.
Procedure to test the secondary interlock switch continuity using an ohmmeter.
Procedure to test the monitor switch continuity using an ohmmeter.
Procedures for testing key components like transformers, magnetrons, capacitors, and relays.
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