Question about Sharp R-520LK Microwave Oven
Chances are that the magnetron has stopped working. Unless it is under the guarantee or is a very expensive micro it really wont be worth fixing.
Posted on Oct 03, 2009
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Posted on Jan 02, 2017
That would be a problem with your primary interlock switch or its mount.
NOTE: There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting.
If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
The interlocks are highlighted in the diagram below.
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jun 29, 2008
The problem is that the magnatron is not getting power. Chance is that if could be a bolwn fuse inside the unit. If the fuse don't fix it then that leaves the charging diode, capacitor or the magnatron, or high voltage xformer of which without technical epertize I would not recomend attempting to replace. good luck
Posted on May 14, 2008
sounds like there is a switch that is bad. you can go buy a new MW for about 200$ and in yours if there is a major problem then i would just go buy a new one but might be worth a repair man to come check it out
pleas do not poke around in the microwave as it carries a charge of 5000volts and can kill you even if not plugged in DON'T TOUCH THE WIRES WITH BRAIDS ON THE OUT SIDE if you must get inside of the unit
Posted on Dec 10, 2008
You have a bad secondary interlock (lower door switch) or its mount is damaged or out of alignment.
We have the service manual for this model and have uploaded it to our site here to help you.
You will need the free Acrobat Reader to view or print it in case you don't have it.
Even though a door switch clicks, it may still be bad inside.
Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.
There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.
If you only need a switch, you can order a universal type here for $5 postpaid.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 28, 2008
I tried the ICE60705 number and it did not cross http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=IEC60705
Is that a serial number by chance?
To do any of the below the chassis cover must be removed.
To perform a diode resistance check you must first ground the high voltage capacitor several times to avoid a nasty shock.
To check the Diode you have to disconnect one side if the diode before reading resistance. Read the Diode on R X 1000 and then reverse the meter leads is should only ONE way. IF it reads both directions or not at all then it has failed.
To check the HV Capacitor (After grounding) you reverse the leads repeatedlyand watch for a momentary jump on an analog meter EACH time the leads are reversed. No jump of the meter needle = bad Capacitor.
Diodes can be found here:
I know that this is an 850W free standing Microwave. I just can recall the model number from memory.
If you find either one of the 2 parts bad I recommend contacting a LOCAL appliance parts center with parts in hand for the simple fact the model number is not crossing.
Just make sure they failed per directions above before replacement.
Thanks again for choosing FixYa.
P.s. If the above parts check out good then that leaves the door switch or the magnetron as possible failures. If the Magnetron has failed you may want to evaluate repair vs total unit replacement cost of the microwave.
Posted on Aug 19, 2010
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