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Models > GSC278PJB3

GSC278PJB3 Whirlpool Microwave Oven Combo - Overview

Get Parts and Repair Help for GSC278PJB3

If you know the microwave oven combo repair part you need, you can browse the list of all parts on the GSC278PJB3, or you can search by name or part description. You can also find your part by where it is located on the GSC278PJB3 by selecting a section below. If you’re not sure which part you need, you can narrow your search by selecting a common symptom and we’ll show you the repair parts most likely to fix your microwave oven combo. We’ve also included any installation videos we have for GSC278PJB3 parts. Installation instructions provided by other do-it-yourselfers will help guide you through your repair.

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$60.28

Glass Cooking Tray

This tray rotates in your microwave ensuring more even temperatures.

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$22.22

2 Piece Broiler Pan

The top of this part is now black.

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$7.20

Touch-Up Paint - White

18ml

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$46.01

Oven Rack

Sold individually.

$11.07

Spray Paint - 12 oz. - White

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$140.71

Magnetron

This part is used to generate microwave energy/heat.

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$51.71

Turntable Motor

This motor is used to rotate the cooking tray.

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$6.60

Touch-up Paint - Black

16ml

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$4.89

Screw

This screw is sold individually.

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$37.62

Convection Rack - Short

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Search Instructions
Keep searches simple, eg. "belt" or "pump". Need help?

No heat after cleaning oven

  • Customer: Frederick from St. Louis, MO
  • Difficulty: Easy
  • Time to Complete: 15 - 30 mins
  • Tools Required: Nutdriver, Pliers
  • 83 of 91 people found this instruction helpful
This built-in oven was slid out of it's space and set on a box. I removed the back cover with nut driver and located the safety overload device. removed nuts and used pliers to remove wires and replace them. The power must be off to do this repair.Replaced the cover and slid back into place. This could be a lot more difficult if your power cord or gas line ... read more

Inner window glass cracked

  • Customer: Evan from Albuquerque, NM
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 87 of 108 people found this instruction helpful
The first thing I did was to remove the oven door by releasing the two latches on the hinges (by hand). I then raised the door toward the vertical position and lifted up. The hinges slide out of the oven housing. I laid the door, inside face up on my island counter top. This ensures that none of the parts will fall when disassembling the door. Next I un... read more

Oven buzzed and no heat

  • Customer: Joseph from Saint Charles, IL
  • Difficulty: Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Nutdriver, Screw drivers, Socket set
  • 47 of 57 people found this instruction helpful
First took down the hood/microwave and removed the sheet metal housing.
I changed HV diode as it was the least expensive component and the first one that internet suggested and tested bad with a ohm meter. Didn't fix a thing.
Capacitor failed test with meter so I ordered and then replaced this.
Still no change so I ordered a new magnetron. ... read more