Have whirlpool gold accuwave micro hood combo model# GH51884XPS5

You have a micro switch out of place or bad on door latch or striker is broken

It certainly sounds like something is wrong. My first GE microwave was like this and it wasn't advertised as anything special. After a long life I replaced it with a Sharp (makes most all microwaves) and was disappointed at the cycling on and off. Now Panasonic makes what they call Inverter microwaves with continuous power. I recently bought a GE (probably made by Panasonic) with this Inverter technology and am very pleased with it. Make sure the microwave you have says AccuWave on it, if it does, it sounds like the magnetron may have been replaced with a non-continuous type of magnetron. Was it bought refurbished/returned/clearanced? I think when I was researching this that it MAY have something to do with the type of power supply to the magnetron and not so much the magnetron itself.

It will need a magnetron and maybe a large capacitor soon

My immediate reaction would be to cut your losses and buy a new unit as sooner or later you will run into a part that is no longer available.

This is not a simple solution, the magnetron the heart of the system may be defective, or the inverter board, "7 years old or less" and possibily the keypad control board, you will somebody that can use test equipment.

Your parts list is here:
http://www.kitchenaid.ca/assets/pdfs/literature/Repair%20Part%20List%20-%20W10315513.pdf
Installation instructions are here:
http://www.kitchenaid.ca/assets/pdfs/literature/Installation%20Instructions%20-%20W10247296.pdf
Owners manual is here:
http://www.kitchenaid.ca/assets/pdfs/literature/User%20Instructions%20-%20W10182518A.pdf

Hopefully this is what you wanted.
If none of the links work use this link:
http://shared.whirlpoolcorp.com/product_literature/search_results.jsp?searchTerm=WMH2175XVT&siteCd=WHRCOM&userType=Servicer and then type your model number on the search window. Do not use dashes in the model number and exclude the last digit if nothing comes up.
Thanks for choosing FixYa,
Kelly

No .. it can also be recirculated . you will need charcoal filters if you do so. There is a specific charcoal filter for each microwave hood. Any appliance part dealer would carry it ( you will need to give them the micro hood model number ) or you can order them online through Whirlpool parts website ( whirlpool owns maytag)

Hello Davisaroundt, we are sorry to hear about your Microwave not powering on. If you would like for us to schedule service for you, then can you please email your address, phone number, the model and serial number, the website you were contacted on, Fixya, your review ID, and date of purchase to [email protected]?

Whirlpool customer service is here and you can also enter your model number on that page to download your owner's manual, installation instructions, etc.

We're happy to help you and we'd appreciate your thoughtful rating of our answer.