Microwave was not heating. Looked online and saw that it might be the magnetron. In a video online I saw how to check to see if it actually was a bad magnetron. Checked my unit following the instructions from the video and proved nit was either the Magnetron or the Magnetron diode. The video said that if you replaced the magnetron you should replace the diode. Purchased both, they came in about 4 days, replaced them then made a cup of sweet tea.