GMC275PDB08 Whirlpool Microwave Oven Combo - Instructions

PartSelect website indicated replacing the high voltage power supply diode is the solution for "no heat" 99% of the time, but the diode was OK. There is more info at the website concerning the case of "loud buzzing and no heat" indicating the magnetron needs to be replaced. As an electrical engineer with knowledge of microwave components, this was also my best guess. However, getting to the magnetron is not the easiest job, but it's not impossible. You also have to be careful to bleed off any charge stored on the high voltage power supply capacitor. Luckily, I found my KitchenAid service manual tucked away inside the unit since I couldn't find it online.

This oven probably was manufactured in the '60s when the house was built. The door doesn't just pull off like the newer models. These pins fit into small holes on the oven hinges. I inserted the pins and lifted the door to a 45 degree angle, before pulling the door completely off. Now that turned out to be the easy part. I then proceeded to completely dismantle the door. It actually has 4 glass layers which had to be cleaned individually. The hardest part of all was actually remembering how to put it back together again. I put the door back on just as I had removed it, then took out the pins, and I was finally done! This was not an easy project, BUT the results look great.

Just put it in

Fool proof.

Verify power is off to the oven, turned main power supply off for the oven at the breaker panel, located the securing screws for the defective element, used a Phillips screw driver to remove the screws, pulled the element slightly out unit wires are exposed, verify 0 volts at the element wiring terminals, used pliers to remove the wires to complete the uninstalling process, reinstall the element in the reverse order, restored power at the breaker panel

I was able to remove the old element and planned it with what little time off that I could. This would have been maybe 20-30 minute repair at the most. HOWEVER! I was extremely irritated screws were not included? When I called to ask if they were missing they said they didn’t come with the element. Cost me a very annoying trip to the hardware store. Not sure if I missed it on the site that they don’t provide screws - would have been nice to know that before I started. Still scratching my head as to why screws wouldn’t be included? My old ones were as beat up as the element I replaced. I was so irritated I was looking for a spot to leave feedback. Product is fine. Shipping was fine. Sending these products out as they do? Zero stars on that.

Remove the left/right outside trim on the double oven. To do this you will need a phillip screw driver. There is only one screw holding each side located at the bottom of the trim (on the inside between the trim and the door). Remove the trim by pulling out and down. Remove the bottom trim by removing the screws located on the outside of the trim. Remove the trim by pulling down and out. Replace the new trim by reversing the process making sure to replace bottom trim first because the outside trim goes over bottom trim to cover up the screws on the bottom trim

I pinpointed the location of the sound, took off the protective plate, felt it vibrating against the plate. I disconnected the power supply, and looked at the wirings and how it was connected, saw some burning residue surrounding the area of the Transformer. Then figured that I could simply replace this. I wrote down the Model and Serial number of the Stove, searched online, found this site. Located the part on the diagram, then simply ordered it. My part arrived in 3 days, and had the part replaced the next day. Couldn't be a smoother fix. Thanks.

First remove the side trimmings by opening the oven door and taking out the two screws near the bottom. Remove the bottom trim by removing the two screws now exposed. Here's the hard part .. The outer glass is held by 4 screws 2 at the top and 2 through U brackets at the bottom. You must remove the 2 bottom ones first and then VERY carefully, whilst supporting the glass remove the 2 top ones and then gently pull from the bottom to release the glass at the top and pull away. The rest is straightforward. There are 4 glass pieces to remove, make sure you clean the finger marks off as you replace them. I would suggest 2 people to replace the final outer glass 'to be safe"

We followed the instructions given by Parts Service. The only problem we had (Whirlpool left two screws out of spacer bracket and it fell out requiring further removable of inner glass to replace spacer. Process took about twenty minutes.

I put the tray in the microwave???? Pretty easy.

EASY. FOLLOWED THE YOUTUBE INSTRUCTIONS ON THE WEBSITE.

I followed the instructions per a YouTube video. My older model was slightly different in parts used in the video, but the general idea was the same. Very happy with current repair / parts. The door now opens smooth as glass, and I even got a chance to clean some internal parts inside the door.

https://youtu.be/tAypQqC5cxo?si=YoDaVMHtalPP3mhO

Unplugged old element unit and plugged in new element. Took two needle nose pliers and a flexible body. Took about 5 minutes. Works fine. Anybody can do it. Make sure power is off at the box.

My oven (late 90's/early 2000's model) didn't have the flip-down hinge locks shown in the video. It seems Whirlpool/Kitchenaid changed the hinges even though they didn't change the model number of the oven. With my style hinges, you have to put Allen wrenches or bent nails in the holes just behind the hinge pins. Then close the door almost all the way and lift it out to separate the hinges. Spring force holds the nails in tightly until you replace the door. This video was very helpful:
https://www.youtube.com/watch?v=p7oRZdIN6m0

Also, my door had 3 different kinds of sheet metal screws. Two of them have similar heads but different threads. Keep track of which is which for when you put everything back together.