GSC278PJS3 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.

Fool proof.

Just put it in

Originally ordered just the spring assuming that might be it and it was the cheapest way. However after getting in I found that the latch assembly had a broken 'tit' that is intended to hold the metal latch in place as it moves. Attempted to glue w/ epoxy but as i expected there was too much pressure to hold it in place. So....ordered the assembly.

TURN OFF BREAKER.....

1) Remove the two side rails by removing screw on the inside bottom of rails.
2) It helps to remove the door to get it out of your way but not required. To do this open door fully and insert two nails or similar into holes on each hinge. Close the door until the hinge contact nails. Lift the door up and out.
3) remove the top control panel by removing screw on either side (outside of oven)and screws on the underside of panel behind upper door.
4) It help to completely remove the panel to have more room to work but not required. If you do it is a good idea to photo the cable locations so it is easy to recall where they go. For the most part they only fit one location but always a good idea.
5) remove the latch by removing all spade connectors and two screws in front.
6) place new latch and reassemble.

Well, the instructions on the computer site were very easy to understand, however, the difficulty lay in the fact that we were 2 78 yr old people and getting to the inside the oven, lifting up the element so that we could see where it should be connected and get it connected was a task. We had to get down on our knees and then get back up. That was a chore within itself. But, the instructions were easy and clear.
Bottom line if us old people can do it, anyone can.

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.

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.

I shut the power off first as this is 240v. Then removed all the screws that hold the element on. The old one had 5 screws. For this part you will need to buy new or reuse the old screws. I reused the old ones. Once loose the element pulled forward and exposed the connectors. I used pliers to pull the broken one out as it did not come out with the old element. It will only pull out a few inches, but that is enough to unplug the connectors. After unplugged the element can be taken to recycling. The new one can be set in the oven with the connectors near the wires and plug the two sides into the connectors. Have a screw ready and slide the rear of the element back into rear which will support it while you insert one of the screws into the front support to hold the element in place. Then move the element and support as needed to install the remaining screws. Once it is all tight, turn on the power and make sure it works.

Pulled the stove out, unscrewed the back and plugged the new thermostat in. Screwed the back back on

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.

we live in Venzuela the ordered windows come to us via a forwarder in the US, one glass (the outer glass) still has to arrive. Very pleased with the service of PartSelect, one glass was in stock, the inner glass had to be ordered with the manufacturer. This glass is on its way and will arrive here in Venezuela by the end of May. As I have to travel to Europe next week, I will install both glasses upon my return somewhere in August next. I will sure inform you about the repair which will be done by myself.
regards,
Titus

Disconnect the sensor harness and checked resistance on the sensor,should read around 1100 ohm I only got 25.The sensor is mounted in the oven cavity back wall below upper element,the door must be removed. Unscrew 2 Philips head screw,unhook the harness,install new sensor,reconnect harness,install screws.

I watched the video on the product page and followed it step by step. Not difficult at all.

removed perimeter screws from the bottom side and the lower cover is hinged at the wall side. Motor is visible and easily removed with two screws. Take of the old one, install the new one, and reverse the procedure to put the bottom cover back in place. Will nee helper to hold one side of the bottom until couple of screws can be put in on the other side.