GSC308PJB05 Whirlpool Microwave Oven Combo - Instructions

cut power off and placed sturdy table same height as bottom of oven in front of oven. removed trim screws. pulled oven out onto table. removed top cover and panel on left side . tested transformer to be sure it was bad. then replaced transforner

It was a matter of swapping out the old door with new door. In all, it was a snap . Around 10 screws to take it apart and a few brackets to hold it all together.

My husband took the back off and replaced it. The repairman suggested pulling the range out into the floor to run the self clean mode. I have owned several such ranges and have never had to do that and won't now. Easy Clean Oven Cleaner will be the next thing I use.

Ordered a new one, put it in place in less than one minute.

Removed and replaced boiler element

Remove rear panel - remove sensor from inside - unplug from rear - reverse to install - did not fix problem

The oven is a KitchenAid convection oven with 4 panes of glass. The front, two inner glass panes that aren’t “touchable” and the interior glass that is the one that takes the heat from the oven and which you can clean easily - this is important because the descriptions of the glass all say “inner glass”. This is door #3 in the diagram that measure 10 x 22”. Which I cracked when I was pouring water into a pan to create steam for bread baking (lesson learned).

Because of the age of the oven, to remove the oven door it was necessary to place “pins” (we use medium screws) into the hole behind the door latches. Then were able to lift off the oven door. (We saw some videos on YouTube)

We placed the oven door on the counter top and removed ALL screws that held the door at the bottom and around the casing - KEEP these screws separate by where you’ve removed them so you replace them into the proper section when you reassemble the door. Each glass you remove has slots that hold them in their proper places. I recommend taking a picture BEFORE you take out each glass as there are brackets that need to go in proper order and you don’t want to forget the order.

We had to flip the door over in order to CAREFULLY remove the casing and access the different inner glass sections (took the opportunity to really clean them). Gathered the broken glass pieces into a paper bag and vacuumed the fragments. Then we were able to place the new interior glass from PartSelect, and reassemble the oven door. It’s perfect!

This took some time most likely because it’s a very old oven and you need to be methodical. I was just glad to be able to get the part - not yet ready to replace the oven.

BTW, originally I was guided to order glass #7 which is one of the inner glass panes that you cannot touch - unless you take apart the oven door - The exchange for the proper door was handled very quickly and easily. Hope this helps.

This was more difficult than anticipated - probably because I'd never done it before. Once I got the door off (I didn't have the proper pins and used nails but didn't realize they had to be headless) I found all the screws, which were relatively easy to take out. I was surprised that the thermal door glass was obscured by two other panes of glass. It took more disassembly than anticipated and a few false starts when reassembling, but all in all it got done. I was happy that a job that would have cost probably $300 or more ended up getting done for $40 plus my labor - which isn't worth much these days. I'd certaily do it again.

Part arrived in timely manner and placed it in microwave oven.

Set the new one inside the microwave

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.

I found that what was keeping the old temp sensor electrical connection attached to the stove-side connection was a little tab. It wasn't obvious that that was the thing that was keeping the connection secure but there weren't any other alternatives. So pushing the tab up with the metal probe (just a narrow rigid metal wire) allowed me to pull the connection apart.

All this takes place way at the back of the oven so its difficult to fiddle with a screwdriver and the retaining screws at arms length. Putting a bit of scotch tape around the screw to keep it attached to the screwdriver kept it from falling off. My hand was a bit shaky extended like that so that was the way to go.

Bottom line, if your oven won't reach or hold the temp you dial in on the control panel it's the temperature sensor. Now if I set it for 300 deg. that's what I get.

Followed a video. Followed instructions

1. Disconnect AC power 2. Remove back with several sheet metal screws. 3. Remove wires from Limit Thermostat. 4. Check Limit Thermostat continuity -- if open then Limit Thermostat is faulty. 5. Remove Limit Thermostat with two screws. 6. Install new thermostat

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