Question about Microwave Ovens
Control panel mal functioning
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Microwave section not working
Quite often this is due to a bad door switch. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383 Feel free to contact me directly if you have further questions.
Posted on Sep 28, 2007
SOME ELECTRONIC CONTROLS HAVE A LOCKOUT FEATURE THAT IS ENGAGED AND DISENGEGED BY HOLDING A CERTAIN BUTTON FOR 5 SECONDS. LOOK FOR A LOCK PAD AND HOLD IT FOR 5 SECONDS TILL IT BEEPS.
IF NOT AVAILABLE, THE TOUCH PAD MAY BE UNPLUGGED FROM THE MAIN P.C. BOARD OR MAY BE DEFECTIVE.
ALSO, TRY UNPLUGGING THE MICROWAVE FOR 5 MINUTES
TO RESET THE MICROCOMPUTER, THEN PLUG IT BACK IN AND SEE IF IT WORKS.
AN ELECTRICAL OUTLET NOT WIRED WITH PROPER POLARITY OR NOT GROUNDED CAN AFFECT ELECTRONIC APPLIANCES ALSO.
Posted on Mar 28, 2008
I do not know what procedure you used to replace the door, but if the buttons and display were working fine before you replaced the door then it seems that there is a plug not plugged into the control display panel. Other than that the low voltage power supply may not be providing the needed voltage for the display and only for the logic circuits which are a different voltage. With the microwave unplugged, take the cover off and look at all the connectors and make sure that they are plugged into something and none that are not plugged in. They should all go somewhere. To answer your original question, there is only one main fuse to the microwave. The circuitry in the control panel operates on low voltages +/- 5 volts or +/-12v so that part is not fused. What I recommend also is to go back mentally through the procedure you used to replace the door and that may give you a clue as to what you unplugged, although you should not have to unplug anything.
Posted on Feb 11, 2009
There are two screws in the vent cover (grille)that goes across the top remove those and the vent cover and you will see one screw in the top of the control panel remove that one,grab the panel slide it up and pull at the top,it hinges downward toward you and will stay there till you get the wires marked and removed from the board.
Posted on Sep 13, 2009
Testimonial: "TomZS - thanks, you were spot on. Four screws in the top on this model. I was able to get at the control panel. Sadly there was no obvious failure."
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