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Sharp Microwave powers down after 40 seconds, need assistance
Sharp Model R1810 Carousel II microwave starts and cooks(heats) but
shutsdown after about 40 seconds. Electronic control board display stays lit, countdown stops and displays remaining time--magnetron cooling fan works during the first 40 seconds but then shutsoff--just before shutdown, fan speed increases(doubling or tripling in speed) These items seemed to check out good with VOM-- power fuse interlock switches (2) monitor switch capacitor diode thermal cutout switch(only found one) fan motor power tranformer Additional trouble shooting note--a power surge protector I had plugged the microwave into was discovered fried--suspect a near by lightning strike? Read an informative article by Sam Goldwasser-- "NOTES ON MICROWAVE OVEN FAILURE DIAGNOSIS AND REPAIR v1.01" but need more help. Thanks |
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