Sharp Microwave Ovens - Recent Questions, Troubleshooting & Support

Why would the high voltage

Hi and welcome to FixYa. I am Kelly. High voltage capacitors can and do fail when a microwave is used for long periods of operation, when the unit is operated with no internal load and sometimes for no reason at all other than the capacitor had an internal failure such as corrosion or a break down of the metal strips inside of it where the strips can make contact with the the case. I have been working on microwaves since the 70's and often there is no apparent reason for the failure of the HV cap.. They just sometimes fail.
However...... there is also a power diode in the microwave that is connected directly to one terminal of the HV Cap. If the power diode has failed it can cause subsequent failure of the HV Cap. The Sharp Power diodes can be found here: http://www.repairclinic.com/Sharp-Microwave-Parts?s=t-FH-DZA119WRKZ-%3d%3db113a6c41

You use and ohm meter on resistance to check the diode AFTER removing the terminal of the diode from the capacitor. NOTE: the capacitor must be shorted across the terminals at least 3 times with a screwdriver while holding the handle only to prevent a horrible shock.
Once the diode terminal is disconnected from the HV Cap read resistance in BOTH directions by reversing the test leads on the terminals of the diode. One direction will read resistance and the other direction it will read open / infinity. Any other reading is a failed diode.

You check the capacitor using an analog (scaled vs digital display) ohm meter on R X 1,000 or R X 10,000 and watch for a jump on the meter just as you touch the terminals EACH time you reverse the leads. No jump or... steady resistance = bad Cap.

Sharp Capacitors can be found here:
http://www.repairclinic.com/Sharp-Microwave-Parts?s=t-FH-DZA119WRKZ-%3d%3db113a6c12

Just note that either a CAP or Diode failure can cause the main fuse to blow at the end of the power cord in the fuse holder.

Fuses are normally either 15 or 20 A Slo-Blo fuses and can be found here:
http://www.repairclinic.com/Sharp-Microwave-Parts?s=t-FH-DZA119WRKZ-%3d%3db113a6c44

Thanks for choosing FixYa

Kelly

Sharp Dial... | Answered on May 13, 2020

1 Answer

Sharp Microwave R-530E Need a part, door latch and spring. Do not know the part number to order the parts.

screenshot 2020-05-13 at 16.17.18-undefined-undefined-0.png

Sharp Microwave... | Answered on May 13, 2020

1 Answer

Sharp Carousel II R-3A83 800 watt .9 cu ft microwave made loud hum sound 5 seconds from finish and all power went out on it.

Using an electrical tester will determine the cause within a short time.

Sharp Microwave... | Answered on May 07, 2020

1 Answer

Sharp R-3A83, 25 years old, used 5 years. 5 seconds before finish it made a loud hum sound and all power went off. Bad magnetron? Bad transformer? Is there a way to trouble shoot the exact problem?

Using an electrical tester you will be able to trouble shoot the issue quickly.

Sharp Microwave... | Answered on May 07, 2020

1 Answer

After using my sharp carasol R-7a55 model on microwave mode the door does not want to open

possibly has to be done cooking . cant be sure as never owned a Sharp . wifey worked for sears so that was what we bought

Sharp Microwave... | Answered on May 05, 2020

1 Answer

I have sharp model kb6524ps microwave drawer has no power.. fuse is good.. and suggestions

circuit failure

Sharp Microwave... | Answered on May 01, 2020

2 Answers

My sharp microwave will not light up model R930aw-p

could be a fuse or burnt out bulb

Sharp Microwave... | Answered on Apr 07, 2020

1 Answer

Sharp R-888F trips circuit breaker when using convention/defrost mode. But it fine when using normal microwave mode.

Heating element short circuit.

Sharp Microwave... | Answered on Feb 11, 2020

1 Answer

Please tell me how to use the sharp microwave oven r-9h20 model for baking cakes please tell me

I searched using https://www.google.com but did not locate an instruction manual for that model Sharp microwave oven.

Recipe at the link below suggests adding extra sugar before baking.

https://www.allrecipes.com/recipe/140772/easy-microwave-chocolate-cake/?_ga=2.211667349.160497590.1579435247-959462057.1579435247

Sharp Microwave... | Answered on Jan 19, 2020

1 Answer

My sharp carousal microwave doesn't do anything. It has four blinking A's that's showing where the set timer is but I can't stop the blinking and wen I push numbers cook or even timer I can't get it to work. So what can I do. A friend of mind just gave it to me it came on by itself then went off.

You can try and unplug it for 5 minutes, push the on button to make sure it's completely discharged. Then plug it in. If it does the same thing, it's toast. Getting it repaired will cost about the same as a new one on sale.

Sharp Microwave... | Answered on Jan 11, 2020

2 Answers

Sharp KB-6524PS no power

There probably is a fuse inside but replacement depends upon your degree of comfort with disassembly while maintaining awareness of the dangerous voltages lurking inside.

Sharp Insight... | Answered on Jan 08, 2020

0 Answers

We have a Sharp R-1874-T convection microwave oven in our 2016 RV. It has been working fine up till yesterday, now it has no power, the breaker was tripped so we reset it with no results, unplugged microwave (non GFI outlet) briefly and no power. We tested the microwave plug for power and it worked fine but still no power to microwave when plugged back in.

Sharp Microwave... | Posted on Jan 01, 2020 | Be the first to answer

5 Answers

Sharp KB-6015K drawer won't open

Hi, there are two ways to this problem.

If it is a simple counter to microwave oven, then you can remove the cabinet, open the door from inside of the microwave to diagnose the problem...

But if it is an over the range model, then it is more complicated and you probably have to call a qualified technician to fix it.

In any way replacement parts, most likely, have to be ordered from Sharp only....

Take care

Sharp KB-6015KS... | Answered on Dec 07, 2019

1 Answer

My Sharp Carosul II microwave and convection oven Model R-9H80, serial # 32246 touch pad not working all the time.

Defective touchpad or poor connection to the control board

Sharp Microwave... | Answered on Dec 03, 2019

1 Answer

Defrost timer analog for a microwave sharp carousel 2 model r-6260

GO BUY A NEW UNIT YOU WILL NOT FIND PARTS FOR A 39 YEAR OLD MICROWAVE

Sharp Microwave... | Answered on Nov 21, 2019

1 Answer

Sharp KB6524PS in wall microwave--my son dove head first into it and now it won't power up, it's not locked. That doesn't suggest fuse right? What would a head on collision and no power suggest?

if the display does light up but it wont turn on,
Broken door switch, broken in the Open position.

But if there is no display at all (no clock, for example) then look at the power supply chain (including the fuse)

Sharp Microwave... | Answered on Nov 13, 2019

2 Answers

The door on my brand new Sharp microwave always swings shut when I want it to stay open. Is there any way I can adjust the hinges, so it can stay open?

Your microwave oven probably is not level.

Sharp Microwave... | Answered on Oct 27, 2019

2 Answers

Our Sharp R-930CS-P sticks and is very hard to open, will open from the push button if you push it hard

Something must have spilled into the mechanism and dried there. You'll need to access and clean it out.

Sharp Microwave... | Answered on Oct 26, 2019

1 Answer

I would like to know the capacity of my sharp carosel alacard microwave so I can replace it - sadly

YOU HAVE TO SHOP FOR YOUR SELF

Sharp Microwave... | Answered on Oct 14, 2019

1 Answer

Our convection microwave died. It was a Sharp R-820JS and measured 20 1/2 W x 12 1/8 H x 19 3/4 D. Having trouble finding a substitute that would fit. Any suggestions?

SADLY WE DO NOT DO THAT FOR YOU , GO SHOPPING

Sharp Microwave... | Answered on Oct 06, 2019

Not finding what you are looking for?

3,900 questions posted

Ask a Question

Usually answered in minutes!

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

Answer questions

Manuals & User Guides

PDF Manual

Sharp Microwave Ovens - Recent Questions, Troubleshooting & Support

Why would the high voltage

Sharp Microwave R-530E Need a part, door latch and spring. Do not know the part number to order the parts.

Sharp Carousel II R-3A83 800 watt .9 cu ft microwave made loud hum sound 5 seconds from finish and all power went out on it.

Sharp R-3A83, 25 years old, used 5 years. 5 seconds before finish it made a loud hum sound and all power went off. Bad magnetron? Bad transformer? Is there a way to trouble shoot the exact problem?

After using my sharp carasol R-7a55 model on microwave mode the door does not want to open

I have sharp model kb6524ps microwave drawer has no power.. fuse is good.. and suggestions

My sharp microwave will not light up model R930aw-p

Sharp R-888F trips circuit breaker when using convention/defrost mode. But it fine when using normal microwave mode.

Please tell me how to use the sharp microwave oven r-9h20 model for baking cakes please tell me

My sharp carousal microwave doesn't do anything. It has four blinking A's that's showing where the set timer is but I can't stop the blinking and wen I push numbers cook or even timer I can't get it to work. So what can I do. A friend of mind just gave it to me it came on by itself then went off.

Sharp KB-6524PS no power

Sharp KB-6015K drawer won't open

My Sharp Carosul II microwave and convection oven Model R-9H80, serial # 32246 touch pad not working all the time.

Defrost timer analog for a microwave sharp carousel 2 model r-6260

Sharp KB6524PS in wall microwave--my son dove head first into it and now it won't power up, it's not locked. That doesn't suggest fuse right? What would a head on collision and no power suggest?

The door on my brand new Sharp microwave always swings shut when I want it to stay open. Is there any way I can adjust the hinges, so it can stay open?

Our Sharp R-930CS-P sticks and is very hard to open, will open from the push button if you push it hard

I would like to know the capacity of my sharp carosel alacard microwave so I can replace it - sadly

Our convection microwave died. It was a Sharp R-820JS and measured 20 1/2 W x 12 1/8 H x 19 3/4 D. Having trouble finding a substitute that would fit. Any suggestions?

Not finding what you are looking for?

Ask a Question

Popular Products

Sharp R-1480 Microwave Oven

Sharp R-930AK Convection/Microwave Oven

Sharp R-1870 Convection/Microwave Oven

Sharp R-1610 Microwave Oven

Sharp R-510HW Microwave Oven

Top Sharp Microwave Ovens Experts

William Miller

Ekse

Gerry Harvey

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

Manuals & User Guides

L0710282.pdf. user-manual-R-7A85...

Http://www.sharpusa.com/files/cae_man...

Http://www.sharpusa.com/files/cae_man...