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Bryan
Bryan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 12156
Experience:  15 yrs. experience as a certified appliance technician.
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We have a Sharp over the range convection microwave oven in

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We have a Sharp over the range convection microwave oven in our motorhome and it will only operate for 59 seconds at a time. We have read through the operation manual and could not find an answer to rectify the problem. Your input would be greatly appreciated.

Hello, Thank you for using this service, I will be helping you with your problem today

do you have the model number so we can better assist you ? look inside on the side wall.

Customer: replied 4 years ago.

model #R-1870

okay perfect, the problem is the high voltage transformer is overheating and shutting down. they are showing this as NLA. the part number is XXXXX RTRNB049MRE0 if you want to search the net for one. also this should be installed by a tech, these are dangerous to work on. even when the microwave is unplugged it can store a lethal amount of voltage in the high voltage capacitor. please be safe and have a tech replace this, thanks , Bryan
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