S E R V I C E
QUICK SERVICE REFERENCES
Whirlpool Europe | AVM 512 | 11.11.1998 / Page 7 |
Customer Service | 8538 512 62291 | Doc. No: 4812 714 12457 |
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PROBLEM | POINTS TO CHECK |
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Cavity lamp does not light, but | Lamp burnt. |
other electrical components | Bad contact between lamp and lamp socket. |
(e.g. turntable) are working. |
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Cavity lamp does not light, all | Power plug not in good connection with the socket. |
other electrical components | No power supply. |
also do not work. | Fuse blown. |
| Bad contact between fuse and fuse holder/clip. |
| Loose door hinge, door poorly adjusted, interlock poorly |
| adjusted; causing fuse to be blown. |
| Short circuit within electrical circuit.Lamp filament short, |
| HV transformer short, all causing fuse blown. |
| Bad contact in contacts or terminals of timer switch, |
| primary and secondary interlock switch. |
| HV diode break down. |
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Oven seems working, food | Defective magnetron (filament broken, filament short to |
does not cook | ground etc.). |
| Ground wire of HV transformer broken. |
| Filament wire short to ground. |
| Filament wire broken. |
| Bad contact in magnetron terminals. |
| Defective control boards. |
| HV diode break down, giving a hum noise. |
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Oven cooks for a short while | Cooling fan jammed. |
and stop. | Cooling fan motor open circuit. |
| Defective cooling fan control relay. |
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Turntable does not turn. | Defective turntable motor. |
| Turntable shaft deformed. |
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User circuit breaker activates. | High leakage in electrical components (mostly motor). |
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MAJOR COMPONENT TESTS |
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HV TRANSFORMER
Remove lead wire.
Measure the resistance of the winding using an ohm meter
Primary winding 3 ohm (approx.)
Secondary winding 100 ohm (approx.)
Filament winding 0 ohm (approx.)
HV CAPACITOR
Remove lead wire
Measure the resistance using an ohm meter set to R*1000
Terminal to terminal should momentary indicates several ohms but gradually increases to infinite. Terminal to case should show infinite.
