Sharp Microwave Door Switch Replacement

Written By: Sanjay Don
  • Comments: 5
Sharp Microwave Door Switch Replacement

Difficulty

Moderate

Steps

5

Time Required

No estimate

Introduction

This guide will show you how to replace the door switch for the Sharp Microwave so that it will not turn on when the door is opened.

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    • Sharp microwave running with door open

    • Problem with the hardware interlock switches triggered by the door latch

    • Sharp model R-248BS

    • Unplug the microwave before you begin disassembly.

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    • Side screw

    • ...and 4 screws in the back

    • Star screws need T15X4 or equivalent. A flathead can be used in a pinch.

    • Remove the screws

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    • Remove the case, should slide out with a little bit of effort.due to notches in the frame on the front top left ( when looking from the back).

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    • Now we will identify the switches

    • The lower two switches

    • ... and the upper switch

    • Upper switch faulty

    How do you know if the switch is faulty if we don’t know the original configuration of what it was supposed to be to start with?

    G B -

    Use a multimeter. Or the easiest way is to listen to the click sound from your switch, but it certainly won't be as accurate as using a multimeter.

    Edwin Jones -

    If the popup plastic tab ( the actuator for the switch) is loose or has a soft click, it is bad.

    Else you can use a multimeter to see if the switch resistance changes when the popup button is pressed (continuity change check)

    Sanjay Don -

    DO NOT touch the capacitor! 2100 Volts can kill! BE CAREFUL! The capacitor can be charged even when the microwave is unplugged.

    Joseph Watson -

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    • Top switch appears loose

    • Replace and reinstall

    • Angled reinsertion to line up hole with plastic support

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

Sanjay Don

Member since: 24/12/17

229 Reputation

One comment

Some Sharp Microwaves use different Torx screws. The T15 didn't fit the screws on my model, it appears to be the security version of the T15. I suggest getting a set such as the Mako instead.

DBDigital -