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Sharp Microwave buttons not working

If your Sharp microwave buttons are not working, test every key on the control panel first. If some buttons respond while others do not, the touchpad and control panel are the most likely cause, followed by the touchpad itself. If the microwave buttons are unresponsive across the entire keypad, the user control and display board is the next likely problem, followed by the main control board, control board, and, less commonly, the control panel. This can affect the microwave start button, number buttons, or other keypad functions while the display may still operate normally. Enter your model number to find the exact replacement part for your specific Sharp microwave, since touchpads, membrane switches, and control boards vary by model. Before replacing a control board or inspecting wiring, remember that opening the microwave cabinet exposes a high-voltage capacitor that can store a lethal charge even after the microwave is unplugged. The capacitor must be properly discharged before any interior work. If you are not familiar with capacitor discharge procedures, have a qualified technician perform the repair.

01 - Sharp Microwave Touchpad and Control Panel

To determine if the touchpad and control panel are defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad and control panel.
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Top Solution

02 - Sharp Microwave Touchpad

To determine if the touchpad is defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad.
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Top Solution

03 - Sharp Microwave User Control and Display Board

To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, replace the user control and display board.
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Top Solution

04 - Sharp Microwave Main Control Board

To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, it is possible that the main control is defective.
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Highly Likely

05 - Sharp Microwave Control Board

To determine if the control board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, it is possible that the control board is defective.
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Common

06 - Sharp Microwave Control Panel

To determine if the control panel is defective, try pressing each of the buttons. If none of the buttons are responding correctly, it is likely the control panel is defective and will need to be replaced.
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Less Common

07 - Sharp Microwave Switch Holder

The microwave switch holder is the component that houses the door switches behind the control panel. If the switch holder is damaged or misaligned, one of more switches may not be actuated when the microwave door is closed, which may prevent the buttons on the control panel from functioning. You will need to uninstall the control panel and inspect the switch holder to confirm it is in good condition and secured properly. Replace the switch holder with a new one if necessary.
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Less Common

Frequently Asked Questions

Why are some buttons on my Sharp microwave not working?
What should I check when none of my Sharp microwave buttons are working?
Can I test a Sharp microwave touchpad with a multimeter?
How do I find the correct Sharp microwave touchpad or control board?
Is it safe to open a Sharp microwave to repair buttons that are unresponsive?