Question about Dacor DMT2420 1200 Watts Microwave Oven
On every microwave oven which I've been asked to repair with the same symptoms, it's the magnetron which has failed. This is the bit which generates the microwaves and it fails more frequently on high wattage ovens.
If your oven is under warranty then send it for repair. If not, then you'll need to judge whether the repair estimate makes sense compared to a new oven.
DIY repairs are usually very straightforward if you can get the parts, usually just a straight job of unscrewing and reassembling. In addition to the magnetron (sometimes called a Klystron) you'll need a microwave gasket. Sometimes it's supplied with the magnetron, but it's a small wire mesh doughnut which fits around the neck of the magnetron and gets crushed into position as the screws are tightened. If you cannot get this part then do not attempt the repair as it is vital for safety. It must always be replaced whenever the magnetron is removed for any reason.
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
Test the high voltage capacitor,
the rectifier diode.or the magnetron. If all this are fine, test the control board.
If it additionally does not spin and no light, then check also the door switch and fuse.
The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
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. (here in UK).
Posted on Apr 27, 2009
This sounds like a bad magnetron that would have to be replaced. There is up to 2000 volts stored in a microwave, even when unplugged. For saftey reasons I would strongly suggest you have a qualified technician check it out.
Hope this helps.
Posted on Aug 24, 2009
Testimonial: "Thanks for the info! That pretty much matches the research I have done on the problem."
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