Question about Sharp R-1871 Convection Microwave Oven
After convection cooking some apples I opened and closed the door before cooling fan finished running. 10 mins later, no power nor any display. outlet is good. ?? I see from schematic there is an inline power fuse and monitor fuse. Any suggestions ?
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Posted on Jan 02, 2017
SOURCE: Over the range microwave
I have the R-1460 in the same series with the identical symptoms. After reading MicrowaveSvc's solution I started taking apart to view the door switches and found the upper door switch to be the problem, but not a switch failure a support failure. A small bottom plastic support post that holds the switch in place was broken (probably from repeated use/abuse) allowing the switch to move when the door hooks were engaged, thus not actuating the button switch. Since the problem was mechanical rather than an electrical bad switch, I made a small support arm for the switch from an old plastic mechanical pencil and glued it in place to hold the switch in its correct position. Problem solved, microwave works! Thanks to MicrowaveSvc's description of door switches.
Posted on May 26, 2007
SOURCE: No Power
If your microwave oven doesn't seem to work at all, check these:
Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it.
Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work.
Posted on Jul 05, 2008
Replace fuse with slo blow from Ace Hardware. Plugged unit in, clock worked. Turned unit on and immediately blew new fuse. Will fix it with a new unit.
Posted on Mar 22, 2009
I too believe that a "protection fuse" was possibly blown. It would need to be found and get replaced. Hopefully it is just a fuse and nothing else because the way it sounds to me, the microwave may be damaged.
Posted on Jun 11, 2009
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