Question about Microwave Ovens
Tips for a great answer:
Feb 15, 2011 | GE Spacemaker JVM1640SJ Microwave Oven
Feb 13, 2011 | KitchenAid KHMS155LSS 1000 Watts Microwave...
Dec 07, 2010 | Whirlpool MH7140XF Microwave Oven
Dec 05, 2010 | GE Microwave Ovens
Oct 18, 2010 | GE JVM1790 Convection / Microwave Oven
Mar 03, 2010 | Microwave Ovens
Dec 16, 2008 | Maytag MMV5165 Microwave Oven
May 28, 2008 | GE Spacemaker JVM1640SJ Microwave Oven
Apr 22, 2008 | GE Spacemaker JVM1640SJ Microwave Oven
A microwave can be dead for many reasons.
If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to
open. When it cools, it closes the circuit and allows power through again.
If it's random, it may be a bad connection, usually on the control board or fuse holder.
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.
At our site, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information.
See our listing here on FixYa: http://tinyurl.com/yzjozk
Oct 21, 2007 | Panasonic NN-S254BF Microwave Oven
Jan 01, 2020 | Sharp Microwave Ovens
38 people viewed this question
Usually answered in minutes!