Question about Sharp R-7A85 Microwave Oven

1 Answer

While using microwave/convection oven in micro setting blew fuse. replaced fuse, plugged back in, clock worked. Started by testing with nothing in oven using microwave setting, heard a sessile and blew fuse a second time. with nothing in oven. stainless walls have slight darkening in places. ran my fingers on walls to see if it had arc couldn't tell. Had used alumin foil earlier while using convection setting. What can I do?

Posted by on

  • bechgx Oct 18, 2010

    yes the solution is helpful, but your webpage is not VERY novice friendly and I couldn't see this answer until now. thank you for the follow through.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Sharp Master
  • 11,800 Answers

The aluminium foil has created a short on the magnetron - the device that generates the microwaves . The magnetron failed and in turn has shorted the power source's transformer - the sizzle you hear is the secondary high tension coil burning away when the unit is powered. This of course triggers the fuse every time you try it.
There is nothing more than can be done to save this oven , the damage is too extensive. Just junk it and get a new one.

Posted on Oct 15, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

GE Advantium 120 SCA1000DWW03 blowing 20amp fuse


Our unit was doing the same thing,
took it into the repair shop, they said there was nothing wrong with the unit, replace the main breaker that supplies power to microwave and try again.
Sure enough the breaker became defective, and we never had issues with it before, but now the unit has not had a single problem.

Feb 13, 2014 | GE Advantium SCA1000H Convection /...

1 Answer

I have a sharp R-930AK micro/convection oven that blew fuse, replaced it, it came on then blew again. Help now what?


Hello, there is a component that is pulling more current than it needs to be. I would check the microwave HV diode there could be some leakage to ground. Also, the mega-tron tube might not be working the way it should. If the mega-tron tube is going out. Just replace the microwave oven. It is to cost prohibitive to replace the mega-tron.


If you replace the microwave oven. Please recycle your old microwave. Boy Scouts, recycling centers, some charitable organization will recycle. GB...stewbison

Sep 06, 2011 | Sharp R-930AK Convection/Microwave Oven

1 Answer

Using Convection Oven and lost power Sharp R-7A85


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.

Mar 21, 2009 | Sharp R-7A85 Microwave Oven

1 Answer

Microwave is on when you shut the door


I tried all the things on your website. Holding the clear button , unplugging,...

So I went back to the last operation that I was doing when the problem started.
I was using "reheat" so I put a glass of water in the micro turned on reheat 1 serving.
It started and then I hit clear after a few minutes and the problem went away.

Dec 15, 2008 | GE Advantium 120 Convection/Microwave Oven

1 Answer

Sunbeam SMW5500 micro/convection oven shorted out when opening door


You are decribing a typical Door Safety Switch problem. The Door Safety Switches has Failed.The Door Safety Switch is designed to shut down the Micro in the event the Micro is still cooking when the door is being opened. The first "Click" of the switch cuts off the "Cook". If it does not cut off the "Cook", the second "Click" blows the power. Otherwise it would "Cook" with the door open, and I need not to tell you how DANGEROUS that could be. It first Tripped the Circuit Breaker which supplies power to the Microwave. After Re-Setting the Breaker the same thing happened except this time the Micro is DEAD- not even a light working. Yes, there is a line FUSE inside the Micro. You however need to address the Door Switch SHORT before replacing the fuse. If not, it will just Blow The Fuse Again, and Again, until the Short is corrected.
Call around, ask How much to replace a Door Safety Switch.
Good Luck!

Feb 15, 2008 | Microwave Ovens

1 Answer

Whirlpool microwave oven


The magnetron are short need to replace / look for the old or in junk shop magnetron same serial # and etc

Jan 02, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Repair an Amana microwave


My amana micro just went dead. No lights nothing ,almost like a fuse blew.Its an over the stove model . The outlet works fine.#mvh210w

Dec 21, 2007 | Amana AMC6158B 1000 Watts Convection /...

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

95 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sharp Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

Devabhakthuni...
Devabhakthuni...

Level 2 Expert

225 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Sharp Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...