20 Most Recent Dacor DMT2420 Microwave Oven Questions & Answers

The inner mechanism is sticking or may have a cracked or broken piece.

Question edited for clarity. Question moved from Misc to Dacor Microwave. It sounds like the magnetron has failed. https://www.fixya.com/support/r29874712-repairing_microwave_ovens ..

It could be an issue with the magnetron or high voltage diode, but I would need a bit more info to be sure. Feel free to e-mail me from my site, and include your full model number (or even better, a picture of the model tag) and include your detailed symptoms to let me know what's happening or not happening, and when it happens. - Ed Miller http://www.microwavecontrol.com

I would suggest not using it and having a qualified repair technician look at it. The lights flashing would concern me that there may be an electrical sorry or another electrical issue going on.

no, you may find used one on ebay

It may be a shorting relay on the the control board, or a problem with one of the door switches or its mount. I regularly repair these microwave controllers and details are here. It's best to follow up with me directly. (FixYa does not notify us directly when follow-ups are posted, so we have to log in to the site to see them.) - William E. Miller, AS-EET [email protected] http://www.microwavecontrol.com Microwave Oven Control Panel Repair Nationwide "Recycling by repairing since 1982"

On model DCM24, that's usually a defective bottom door switch, or its mount is loose, misaligned, or broken. The service manual is here, and my help file on door switches is here. For free DIY and other help and advice, feel free to contact me via my site. Always include your FULL model number*, FCC ID number*, and detailed symptom information. * from the tag in the cooking cavity or elsewhere on the oven (or send a clear photo of tag) William E. Miller, AS-EET http://www.microwavecontrol.com Microwave Oven Control Panel Repair Nationwide "Recycling by repairing since 1982"

Some ovens use a plastic material, which is impregnated with a ferrite material, to choke microwave leakage at the edge of the door. If this is melted, the oven should not be used, and it would have to be replaced. After replacement, a leakage test would have to be done. If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

That would be your waveguide cover. If damaged or discolored, the waveguide cover has been damaged by heat and must be replaced. It protects your waveguide and magnetron from arcing due to grease and food particles. The area of the waveguide behind the waveguide cover should be clean, and if rust or flaking is present it must be sanded, then repainted with high temperature appliance paint. For Dacor model DMT2420S, the waveguide is part number 66345 and you can get it from The Pros here for $11.07 (subject to change). The service manual is at my site here: http://www.microwavecontrol.com/dmt_2420_sm.pdf and the part list is here: http://www.microwavecontrol.com/dmt_2420_parts_list.pdf. Feel free to e-Mail me at [email protected] if you need more free advice.

hi Richard, from experience i would say the power supply to the magnetron is at fault, you must take extreme care if you intend to test the supply as the high voltages involved... Regards Rob