Question about Sharp R420L Microwave Oven

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I have a Sharp Microwave Carousel R-420B. I put a bowl of soup in , closed the door, pressed Minute Plus, and hit Stop with approx 20 seconds to go... pressed the door release but nothing happened... door did not open...

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  • msmully451 Jun 03, 2011

    I tried but could not open the door... my wife and I pulled the button off, and with a flashlight, could not see any mechanism which would release the door... we tried prying the door open, but am afraid of breaking the door, or warping it to the point where radiation may leak..

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2 Answers

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  • Sharp Master
  • 19,396 Answers

Hi.

There is no mechanism that will release the door. The door interlock circuit is broken. The door lock on Sharp MW oven gets opened when the latch is energizing.

By prying the door you can compromise the good working of the oven. The Microwave must be disassembled. If the door is hiding screws holding the chassis together, the technician may decide to break the door latch (this is made of plastic) by grabbing the upper and lower side of the door, pulling slightly and helping with a flat tool. If the operation is done by the user there is an high risk to warp the door frame or the chassis, causing more damage.

In this case I suggest disconnecting power for ten minutes. Since that may not work, call Sharp service at the number listed on the owners manual to have the oven repaired by a professional.

Regards.

Ginko

Posted on Jun 03, 2011

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  • Sharp Master
  • 6,993 Answers

Hello,

Usually, the door lever or hinges is the cause of this type of problem.

But in this case, I don't think the door lever or hinge is the cause of your problem.

I think the door is jammed and only needs some force before is can open or unjam.

Use your hands or a flat Philips screw driver to forcefully open the door. Don't apply too much force. Just apply a reason amount of force that could open the oven door.

Before you attempt to forcefully open the microwave door, leave it for about 45mins to 1hr, after that forcefully open the door.

If the above doesn't help to open the door, please let me know so that I can direct you further.

I wish you good luck.

Regards.












Mine does this occasionally, and it's because the door hinges have got a bit out of line, allowing the door to drop slightly, so the catch mechanism won't quite disengage.
Look along the bottom edge of the door and see if it has dropped lower than the front panel next to it. Try applying a bit of upward pressure on the bottom edge with your fingers, while pulling towards you at the same time, and with your other hand press the release button.

If that gets it open, remove last night's failed meal, open the door fully and carefully force it up a bit at a time, to bend the hinges back to level - keep pushing the door back so it nearly closes, and look at the bottom edge to check on progress. When the bottom of the door looks level with the panel , try closing it fully and see if the release button will open it again.

Good luck!

Posted on Jun 03, 2011

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MODEL R-395Y sharp carousel microwave not working. All power outlets are fine. Please help, cheers lyn


I was unable to locate a service repair manual specific to your microwave; sorry.

You'll must likely have to find a Sharp service and repair center.
I've attached a link that contains the user's manual to your microwave...it has the phone number and address of Sharp; perhaps you can phone them and ask where a repair center is located.

This is the diagnostic check list Sharp recommends before calling for service:
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The service manual is here:
http://www.microwavedisplay.com/r820bc_bk_bw_sm.pdf

You can get Sharp parts from Encompass here.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
See http://www.microtechfactoryservice.com/cap_test.html

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damper.jpgdamper.jpg

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