All Installation Instructions for Whirlpool Microwave Oven Combo GSC308PJQ4

Taking the door apart.

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.

Parts Used:

Range Inner Door Glass

R G from Orlando, FL
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers

5 of 9 people found this instruction helpful.

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All elements would heat to around 200 degrees, then stop

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.

Parts Used:

Range Temperature Sensor

frank from Wilmington, NC
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

3 of 3 people found this instruction helpful.

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Glass Tray broke

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

Parts Used:

Microwave Turntable Tray

Ronald from CLARKSVILLE, MD
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins

3 of 3 people found this instruction helpful.

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Oven will not maintain set temp

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

Parts Used:

Range Temperature Sensor

Sam from TINLEY PARK, IL
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers

3 of 3 people found this instruction helpful.

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Glass microwave tray broke

Set the new one inside the microwave

Parts Used:

Microwave Turntable Tray

John from Minden, NV
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins

4 of 7 people found this instruction helpful.

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Cracked glass tray

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

Parts Used:

Microwave Turntable Tray

Richard from SUMMERVILLE, GA
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins

3 of 4 people found this instruction helpful.

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Broken Glass Replaced

XLarge pizza tray in a 450 degree oven - slam the door & CRACK. Replacement glass arrived on Saturday - VERY FAST DELIVERY. Placed 2 allen wrenches in both hinges - open the door half way & lift up. Place the door on a towel. Removed 6 screws, lift & seperated the inner oven covering, removed the broken glass & cleaned inside & replaced with new glass. More time was spent cleaning & coming up with a tool to fit into the hinge

Parts Used:

Range Inner Door Glass

Tom from Rancho Santa Fe, CA
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers

3 of 5 people found this instruction helpful.

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Had to replace the bake element

Cut the power. Undid the screws to the element. Popped off the old element replaced with new,put screws back in turned power back on and Shazam it was up and going

Parts Used:

Oven Bake Element

Roxanne from MARTELL, NE
Difficulty Level:
Very Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

2 of 2 people found this instruction helpful.

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Oven would not heat

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

Parts Used:

Limit Thermostat

Ray from GOLD CANYON, AZ
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

2 of 2 people found this instruction helpful.

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Oven temperature did match target temp entered on control panel.

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.

Parts Used:

Range Temperature Sensor

Richard from EVANSTON, WY
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers

2 of 2 people found this instruction helpful.

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Loud buzzing noise and no heat.

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.

Parts Used:

Magnetron

Charles R from Libertyville, IL
Difficulty Level:
Difficult
Total Repair Time:
More than 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set

2 of 2 people found this instruction helpful.

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The oven door would not open properly. The hinges needed replacement.

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

Parts Used:

Door Hinge

James from FRESNO, CA
Difficulty Level:
Really Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers

2 of 2 people found this instruction helpful.

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Cracked inner door thermal glass

Followed a video. Followed instructions

Parts Used:

Range Inner Door Glass

Bob from CARY, IL
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers

2 of 2 people found this instruction helpful.

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The bottom bake element died

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.

Parts Used:

Oven Bake Element