Faulty Big Capacitor In Microwave Oven
The Brand of this Microwave oven is Citizen Model No.: JM5598K. This appliance belongs to the Restaurante Romantico San Severino in Matanzas-Cuba: http://www.tripadvisor.es/Restaurant_Review-g663510-d4270425-Reviews-Restaurante_Romantico_San_Severino-Matanzas_Matanzas_Province_Cuba.html
The complaint was it switched on but when you executed any function, the fuse blowed right away, and they were using a piece of wire to substitute the fuse. This happened in Chritsmas Eve and they had not any other Microwave oven to substitute the broken one.
Note: never use a piece of wire to substitute a fuse.
First thing done was to disassemble the device; some screws of the upper cover were taken out.
When you face a situation like this, you should take a look at the high Voltage (HV) section:
- The HV diode was tested and it was fine.
- The Magnetron was not short-circuited.
- But the HV capacitor was shorted.
This capacitor of 1.00µF/2100VAC was extracted from the system.
Two days later a new one was bought with a similar features: 0.95µF±3% 2100VAC, it was connected into the circuit. The fuse was substituted for another one with same features too.
When the equipment was powered on, look at the results in the photos below:
The Microwave oven really worked perfectly fine, the owner of the restaurant, who is my friend was very happy now.
This article was prepared for you by Humberto Rodriguez, one of our ‘Master Authors’ from Cuba.
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