Note: This question is for the older version of this part, but we thought you might still find it helpful
Hi again, I replace the door sw AP4044474, but the same loud buzzing is there. I can hear the trasformer. I also replace the high voltage diode. I need help. Thank you. JD
ANSWER Hello Josue. If the humming is coming during the cooking cycle, you will need to replace the magnetron W10126786 in the unit. Hope this helps.
Answered by AppliancePartsPros.com | Monday, January 16, 2012