Is it possible that some spray cleaner got into the controls?
I always recommend that users instead spray cleaner on a soft cloth then wipe the control panel.
Also, I always recommend non-ammonia cleaners since ammonia can crack and damage plastic.
Otherwise, the spray can get into the controls and lock it up or make it act odd.
If it does not dry out over time, it may need to be manually dried or blown out.
The keypad may be damaged or worn out, or control unit may be damaged.
On some models, the membrane keypad is not available as a separate part,
so you would have to order the control panel frame assembly which comes
with a new keypad.
In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.
At
our Web site, we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.
Some connectors on the relays may have a lock:
Bought it 2 years ago - has been working fine. - positivelock.jpgds/images/positivelock.jpg" alt="positivelock.jpg" class="h_mi" />
You can find handy exploded views and get part numbers by entering your full model number here.
If
you (or someone you know) might want to replace it yourself, I have
uploaded a handy guide with pictures showing you what's typically
involved. It's here.
If you might be interested in having us so the work for you, we charge $39.95.
Feel free to contact me directly.
We're
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
William E. Miller
[email protected]
http://www.microwavedisplay.com
If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.
Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely
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