Rick for Model Number KCMS185JSS5 The microwave has been slowly getting louder for some time. Believe it or not it has been like that for a year or so. It seems to heat just fine. Checked the diode with a 9V battery and get a 3V voltage drop in one direction ok. Capacitor reads the 1uF ok. Magnetron read .3 ohms across terminals and infinity from each terminal to ground. Everything seems to read ok. Any thoughts?
Answer Hello Rick, It could be that the noise is coming from the fan motor in the unit. You may want to check those out. Read More... Answered by AppliancePartsPros.com | Tuesday, April 25, 2017