Question about Whirlpool MH1140XM Microwave Oven
Manufacturer: Whirlpool Model no: MH1140XMB-1 The other day, I went to replace the range light and ended up breaking the screw connector from the bulb (the installer glued the bulb in place.) so I flipped the relay for the microwave, used my pliers to remove the rest of the bulb, (didn't have a replacement bulb so I just screwed the cover back on.) and then flipped the relay back on. The control panel came up like it had lost power, so I pressed the clock button and re-entered the time. My wife then tried using the oven, and it let her enter the cooktime, and even hit start. At which point the oven should come on, nothing happens, but the timer starts counting down like it's cooking. Upon investigating other functions, it also appears that the vent fan isn't working, and upon checking the voltage to the empty bulb with my multimeter, it was 4VAC, no matter how the switch was set on the control panel. Any tips would be much appreciated.
This is a problem with the control panel assembly, which we repair nationwide for $32.50 postpaid. Sometimes the bulbs short when they fail, and that damages the control board. This also can happen when bulbs are removed or installed without first unlugging the oven or turning off the breaker. For critical safety & disassembly info and other details of our service, see http://tinyurl.com/yzjozk
Posted on Jan 16, 2007
This solution does not indicate how to get a control panel repaired nationwide etc.??
Posted on Jan 17, 2008
Tips for a great answer:
Jun 26, 2015 | Whirlpool MH1150XM Convection/Microwave...
Aug 30, 2014 | Whirlpool Microwave Ovens
Aug 10, 2011 | Whirlpool MH6140XK Microwave Oven
Dec 22, 2010 | Frigidaire GLMV169D Microwave Oven
The magnetron may have either failed or
is not being supplied with the extremely high voltage required to run
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
If the magnetron has failed it is possible that it has taken out the mains fuse. Replace all faulty components with identical types and values!
Hope that helps.
Nov 12, 2010 | Whirlpool MH7155XM Microwave Oven
Oct 12, 2010 | Whirlpool Microwave Ovens
Jun 02, 2010 | Whirlpool 1.6 Cu. Ft. Over-the-Range...
May 06, 2010 | Maytag Over-the-Range Microwave
Oct 09, 2009 | Whirlpool MH1140XM Microwave Oven
Apr 20, 2013 | Whirlpool MH1140XM Microwave Oven
291 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: