How to Troubleshoot & Replace Samsung AP4452449 / DE64-02219A Microwave Select Button

The repair descriptions from other microwave owners gave me the confidence to take the oven apart and replace the two parts. 

Found exactly the right replacement part here, viewed a YouTube video and fixed it. 

Used a video - suggestion of taking a photo of the board before disconnected the cords was very helpful. 

Followwd repair directions on YouTube. 

Found articles from others on the internet, which gave the link for www.appliancepartspros.com. 1. Turn off breaker / power to microwave 2. No need to dismount the unit. 3. On the top front of unit (looking down on top) remove phillips screws 4. Slide piece above the door to the left and gently pull it out/off and set aside 5. On the plastic cover at the right side of the door, remove 1 screw (top left) 6. Slide the piece (with buttons) up and gently pull it out/off to reveal components. 7. For your peace, take a photo of the wire connections with a smart phone. They are color keyed and of a specific size connector. 8. Squeeze the connectors to release and pull off all connectors/cable 9. Clean hands please! Remove 3 screws holding circuit board and lift up and slide out. 10. Remove medal box that houses the circuit board. Plastic tabs hold the box in place a. Use a case knife to gently pry box sides off tabs and pull up/off each of 4 tabs. b. Remove medal box. 11. Remove the (square) button unit by gently prying up and pushing off of plastic holding tabs 12. Remove the circuit board (same as 11 above) to access the buttons. Observe rotation 13. Install new button unit, clear plastic sheet, circuit board and button housing. 14. Reassemble. 

Ordered the parts and installed it 

Replaced assy key module and button assy. Fan is working great now. 

Replaced the parts after reading other customer comments with instructions. 

I watched a Youtube video on how to replace the select button on my microwave. 

Easier than I thought. Two screws held the top vented section above the door. Once the screws were removed from the top looking down, the piece slides to the left and removes. This exposes the one screw from the assembly and casing that holds the fan and light buttons on the front. Remove the front screw, then slide the whole side up until you can remove it from the microwave. The circuit board for the buttons had broken free from the clips and pushed back. If you have to remove the circuit board take pictures first of all the wire and connectors. The buttons are snapped into place but take a little work to remove. Not hard. Reassemble board. Connect wires. Re-mount to the microwave.