Sharp 1100 w Microwave Model R-420BK - Clock display not working correctly
My microwave (Sharp R-420BK) has worked fine until I moved it, recently. Now the clock display is "messed up". There are numbers, but they don't display correctly. It is as if some of the lights on the clock display don't work, making the numbers display incorrectly. The touch pad works fine. The microwave heats just fine. Everything else is perfect except the digital numbers don't display correctly.
Do you know what I need to do to fix it, what part I would need, and if the repair is even cost effective for this model microwave?
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Reset the clock. Press "Clock" and the correct time, using
the number pads. Press "AM/PM" if applicable, and press "Start" or
"Clock" to confirm.
Press "Timer On/Off" to reset the timer if nothing on the
touch pad will operate. Use the number pads to select a new timed
amount, if desired, and press "Timer On/Off" to start. Press again to
Press and hold "Clear/Off" for three seconds if the timer
will not function or is blinking when you touch the pads. This will
release the "Child Lock" feature. Make a new touch pad selection.
Disconnect power to the microwave if following Steps 1
through 3 does not resolve the blinking timer. Wait a few minutes, and
then restore power to reset the microwave.
However if the problem persist the display board main control board is faulty
On most recent Sharp microwaves, the fuse only interrupts main power, so if the fuse is blown, it will be totally dead.
first thing I would suggest is a hard
reset. Unplug the unit for a
minute or so. Then plug it back in, set the clock and try again.
If that doesn't work,
leave it unplugged for about 5 minutes then try it.
Then chances are you have a failed microwave display. Unless this is an over the range, touch screen, or convection type, it's probably not worth repair, but you can get more information on such repairs here.
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
Disconnect the power for 30 seconds. After restoring power, do not set the clock.
If your model has an ON/OFF clock display, you can choose not to have the time displayed.
To choose this option, press the 0 pad for about three seconds. To Turn the display back on, press the 0 again.
Touch the clock pad. Enter in the correct time of day by touching the numbers in sequence. Touch the clock pad again.