Question about Sharp R-316FS Microwave Oven
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Posted on Jan 02, 2017
You probably have a failing door switch or the mount which holds your door switch is loose or broken. In most designs, it is the upper door switch that will produce these very symptoms when it is intermittent or its mount is broken or loose. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure. Slamming the door, damage during shipping or transportation and sloppy manufacturing techniques or materials are the primary causes of trouble with the door switch mounts. I have a text file called "doorsw.txt" which helps in diagnosing and repairing door switch problems, and a file called "safety.txt" which is of vital importance. If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
Posted on Mar 04, 2007
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
Microwavesvc, that's what I've had happen with my sharp also, I carved a hook out of a piece of plastic and then epoxied it in, and haven't had any more problems with that.
Another problem I've had with the sharp (that just reoccured, I'm trying to figure it out) is that the micro-switches that the door latch push have gone bad. Originally just one went bad and I replaced it, now the micro has the light and fan on, and won't recognize being closed...
Posted on Jun 11, 2008
You have to replace the control board. Sharp has had problems with the display boards for awhile. There is no bulb or fuse you can change.
Posted on Mar 15, 2009
SOURCE: Sharp Carousel Microwave R-1505
There are two options for this model:
1. You can order our exclusive modified control unit (part # CU150) with our proprietary upgrades for $95, or add $15 for a new select button assembly making it part # CU150B for a total of $110.
Then if you return your defective control unit in repairable, good cosmetic condition, we'll give you a core refund of $30.
It comes with a one-year guarantee. For details, see: http://www.microwavedisplay.com/exchange.htm
2. We can repair your existing control unit for $39.95 in about a week or so with a one year guarantee.
Feel free to contact me directly (and please remind me of your model number) for more information & help.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
Posted on Jun 28, 2009
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