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Sharp R1451 motor keeps running, key pad won't respond, will not heat, light does not go out turn table does not turn.

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  • sanlangston2 Feb 06, 2010

    thanks for the response, but that did not work, i believe the problem may be the pc

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Sounds like a door switch, check all switches if they're good it's the pc board

Posted on Feb 05, 2010

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1 Answer

Turn table won't turn on ewave microwave oven


Almost certain if microwave still heats a bad motor or gear issue inside the unit--if unit will not heat the safety switch in the side that the door engages is the cause of the wheel or platter not turning--prevents unit from use if door open.

Nov 06, 2012 | Microwave Ovens

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I have a sharp 1900 w/r 24 at microwave, display shows a single green dot, when switched on at the wall I just hear a normal sound as if the unit is operating but nothing works


In this case as the display does not show a clock then it seems the program controller is not working correctly. So check power - step down supply, if the pads are responding- if not faulty pads. Also the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean,solder and reset the board.

Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html

Now unless the display works and the processor starts to switch on the MAGNETRON , the table and light will also switch on as it must heat.

So it is necessary to check the main controller unit as it seems to be the suspect..

Aug 23, 2011 | Sharp Microwave Ovens

1 Answer

Does not heat


HI..there is a heating filament of an oven MAGNETRON..it s responsible of producing heat to the oven..possibly this is defective ..this filament must be replaced by a new one..theres no problem with the motor cos it runs the table power and light button seems working..HOPE THIS HELPS..thank yuo for choosing fixya..

Jul 20, 2011 | Sharp R-930AK Convection/Microwave Oven

2 Answers

I select High/Med/Low, set time say 1 - 2 mins microwave starts up light comes on, fan comes on, table turns...but after 20-30secs table stops, light goes off, disply reverts to clock time, fan runs for...


If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type. In this case it seems that the program controller board has errors specially if the oven heats and shuts off. remove the board, clean and reset.
If there is heating without any issues, you can use the microwave safely

May 16, 2011 | Microwave Ovens

2 Answers

My sharp R-953 turn table turns slowly when you put some thing on it ,it stops turning


Replacement of the turntable motor should be carried out by a qualified appliance repair service.

YOUR SAFETY IS PARAMOUNT!

Attempt this only if you are competent.

But here is a basic method if you are mechanically minded and have electrical safety knowledge.

The motor assembly is fixed to the base of the oven usually with two screws and access is obtained usually by removing the inspection plate directly beneath the motor. It is usually a plug in synchronous motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate, sometimes it must be cut out with sharp cutters, and disconnect the motor. Remove the motor and go and get a new one. Fit the new motor and fit the inspection cover back on the base by turning it to fit and using an extra screw fix it then put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
Hope this helps.

Jan 13, 2011 | Sharp R-1870 Convection/Microwave Oven

1 Answer

I have a MH2155xpq2 microwave. Everything works, comes on, table turns lights come on and I can here it running , but it does not heat anything. We eard a loud pop sound then it stopped heating, but...


Fuses are cheap. UNPLUG IT FIRST! Remove the top plastic grill by pushing the top edges down and tilt the top of it out. VERY CARFULL it is cheap plastic and easy to break the tabs. You will then see a single screw at the top of the key pad, remove it. Then the entire key pad "Slides Up" has little CHEAP plastic hooks on the left and metal hooks on the right. Once you slide it (key pad) up, it should fold down like a door. The fuse is on the right side and there is a BLACK plastic bag with the tech specs inside top right. THAT BEING SAID, the loud pop very likely was NOT the fuse. Probably a diode, some kind of short or the magnatron. But as I said fuses are cheap and easy to tell if bad. Just look at it (fuse). AGAIN UNPLUG IT FIRST and let it set for an hour or two BEFORE working on it. It also has a VERY LARGE HV Capacitor in it.

Jan 03, 2011 | Whirlpool Microwave Ovens

1 Answer

Microwave turntable works intermittenly - also no light


if you have on the key pad turn table on/off it may be the pad itself / I would ck the connections on the prosser . as the get film (correded ) you can use a spray cleanner for this . and it may correct the problem . flickering light may be the element and it may fail . (soon ) ****

Jan 09, 2010 | Samsung MW1030WA Microwave Oven

1 Answer

Lights up BUT does not cook


was there any motor that should run as you turn it on, the fan inside and the rotating table motor. try to replace that micro switch at the door that bubbled out and burnt. try to test or replaced right away the industrial diode that is connected from the capacitor to the ground of the microwave.

Feb 17, 2008 | Panasonic NN-S763BF Microwave Oven

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