Author Topic: Maytag Microwave not Heating.  (Read 3527 times)

Offline ThunderScout

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Maytag Microwave not Heating.
« on: March 30, 2009, 07:42:00 AM »
How do I discharge the diode?

Model UMV1152BAP
« Last Edit: April 03, 2009, 12:32:00 PM by Al Capone »

Offline Al Capone

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Re: Maytag Microwave not Heating.
« Reply #1 on: March 30, 2009, 10:32:39 AM »
Hi,

Please be sure to read, Posting Basics - Starting a New Topic.

Note were it say's towards the bottom.

Quote
Please do not ask your own question in a topic.
In other words, please don't hijack the topic and make it yours.
Start your own topic and reference the other topic related to your issue.

I have made your reply into a new topic.

What is the brand and model number of your microwave?

« Last Edit: April 03, 2009, 12:32:26 PM by Al Capone »
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Offline whirlpooltech

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Re: Maytag Microwave not Heating.
« Reply #2 on: March 30, 2009, 10:36:58 AM »
You microwave will run,  but not heat?

Quote
How do I discharge the diode?

You don't discharge a diode.

You do want to discharge the high voltage capacitor.

This is how I discharge a high voltage capacitor.

First unplug the microwave.

Then take a large screw drive and short both terminals to the side of the cabinet and then to each other.

If you get us a model number we can try and find you a service manual.

« Last Edit: April 03, 2009, 12:32:39 PM by Al Capone »

Offline jayman73

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Re: Maytag Microwave not Heating.
« Reply #3 on: April 01, 2009, 11:06:01 AM »
How do I discharge the diode?
be VERY CAREFULL  when dealing with the high voltage on a microwave
« Last Edit: April 03, 2009, 12:32:52 PM by Al Capone »

Offline JWWebster

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Re: Maytag Microwave not Heating.
« Reply #4 on: April 01, 2009, 11:27:27 PM »
A diode does not hold a charge. What it does is repel electricity.
The problem that occurs with a diode is if it bleeds the power through to the chassis. That is a short. Here is how it works: the transformer is powered up, the juice from it get forced fed directly into the capacitor and diode on its way to the magnetron  tube. As the power hits the diode it gets bouced back quickly. The job of the diode is cause an agitation effect. The capacitor holds the charge that you asked about. It will knock fire from your butt if you ain't careful. A high voltage, highly agitated beam is tossed into the microwave and as those atoms within any object you place in the microwave get hit by that beam, that diode reverses the flow from that beam a billion times a second. This action produces friction and this friction produces the heat within the object.
« Last Edit: April 03, 2009, 12:33:03 PM by Al Capone »
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Offline Repair-man

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Re: Maytag Microwave not Heating.
« Reply #5 on: April 02, 2009, 06:35:31 AM »
OMG   :o
« Last Edit: April 03, 2009, 12:33:15 PM by Al Capone »
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Offline JWWebster

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Re: Maytag Microwave not Heating.
« Reply #6 on: April 02, 2009, 12:43:07 PM »
What?
« Last Edit: April 03, 2009, 12:33:26 PM by Al Capone »
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        never grow rusty.

About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
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Offline ThunderScout

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Re: Maytag Microwave not Heating.
« Reply #7 on: April 03, 2009, 12:26:15 PM »
Actually, it is a Maytag Microwave.  Model# UMV1152BAP
Serial # 51268529GP

Everything works except it does not heat.  After reading the forum, I think maybe my thermostat has gone bad.  I want to do this myself, or just purchase a new one.  I cannot see having someone out here to fix it and run the bill up to the same as purchasing a new one. Funny thing is, my projection tv went out two days before the mircrowave and I was told the G-board is bad and needs to be removed and sent for repair.

What is it with high voltage parts anyway?  Are they all connected?   ;)
« Last Edit: April 03, 2009, 12:33:36 PM by Al Capone »

Offline Al Capone

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Re: Maytag Microwave not Heating.
« Reply #8 on: April 03, 2009, 12:36:00 PM »
ThunderScout,

I edited the topic to include the model number.
I also edited the title and all the Re: titles to say Maytag Microwave not Heating instead of Whirlpool.

This topic has also now been place in the correct board for Maytag products.

Thanks.
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Offline whirlpooltech

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Re: Maytag Microwave not Heating.
« Reply #9 on: April 03, 2009, 01:01:43 PM »
If you have a volt meter and know how to use it you could check to see if you have 120 volts going to the high voltage transformer.

If you do have 120v going to the high voltage transformer then you know it's some kind of problem on the high voltage side of things.

If it is some kind of high voltage problem chances are good that it's the high voltage diode that is bad.

High Voltage Diode Factory Part Number: 53001375

If you don't have 120v going to the high voltage transformer then it could be a bad thermostat/fuse, door switch or control board.




 

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