This is a classic magnetron failure that or the High Power Diode, this is usually what fails.
http://elektrotanya.com/lg_md-3248yz_sm.pdf/download.html
Service manual above. MW's are very dangerous to service.in my professional opinion, one should get the unit service by professionals. Always ask for a "Quote" before proceeding with any repair.
Well that's not good news! I suspect the Magnatron ( engine) is at fault here. The cost of replacement often exceeds the value of the unit. Considering these days a microwave can be bought new from about a $100.00 depending on size. Second hand ones can also be bought from about $30 with a warranty and a pre sales check.
Magnatron replacement is about $250 + labour of about 2 hrs
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SOURCE: microwave will not heat
Had the same problem--the timer would even count down. The magnetron fan would not turn on, and the microwave would not heat. Checked out several components, but ended up being just the door latch out of adjustment! Be sure to discharge the capacitor before messing around in there. It keeps a charge even when unplugged. Short out the unused terminal on the capacitor to a screw in the chassis, using a short length of insulated wire.
SOURCE: Microwave won't heat food.
This would be under warranty, so Maytag should take care of it for you: http://maytag.com/support/index.jsp
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SOURCE: Microwave turns on, but no heat or turntable movement
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
SOURCE: everything works except the cooking part/no heating/turntable not turning, help!
you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt
SOURCE: everything runs but food does not heat up
est the high voltage capacitor,the rectifier diode.or the magnetron. If all this are fine, test the control board.
Thediode
and capacitors can br tested. The capacitor must bealloweddischarge
before testing, or you risk to get electrocuted, evenifpower is off.
Capacitors can get discharged by shorting theirtwocontacts.
Before replacing the magnetron test also the control board.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.
All locations, and description of this parts can be located using the diagram here: Counter top.
Parts must be tested to find out what is wrong.
Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.
Regarding parts, contact the seller here to purchase parts.
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