Question about Sharp Microwave Ovens

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Sharp R-505FS Control pad has stopped working over several days. Pressing numbers gets no response. Every few days more numbers or functions ceased to work.

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Hmmm... that model number is not showing up. Wonder if it was made for a market other than the US or something?

I'd be happy to help you if I could. Could you check that model?

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

Posted on May 30, 2010

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1 Answer

My Microwave mysteriously starts for no reason and I cannot stop it unless I open the door


This is due to fault in the touch pad or the front control unit. There is dirt or moisture which triggers the start to function on the processor board. You need to remove the front panel and remove the touch pad /controls, try and dry using a dryer to warm. If there is no result the pads must be replaced. Also check for clogging of insects within the board which can trigger the start function or malfunction. remove and clean the board.

Jan 25, 2013 | Microwave Ovens

2 Answers

Sharp microwave 8888 is flashing and I cannot remove


see this steps and fix it. God bless you

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.

  • 2 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 cancel.
  • 3 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.
  • 4 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


    10_3_2012_4_59_38_am.gif

    Oct 02, 2012 | Sharp Microwave Ovens

    1 Answer

    Sharp Microwave on "Lock" and


    The Child Lock prevents unwanted oven operation such as by small children. The oven can be set so that the control panel is deactivated or locked. To set, touch CLOCK, the number 1 pad and then touch the START pad and hold for 3 seconds. Should a pad be touched, will appear in the display. To cancel, touch CLOCK, the number 1 and STOP/CLEAR pads

    Mar 08, 2011 | Microwave Ovens

    1 Answer

    I have a Dacor microwave DMO24 oven which i think is manufactured by Sharp. when the cook function is started it will hum/buzz for about 1 second and then blow a fuse. from the sound, and it's...


    It is indeed made by Sharp.

    If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

    If it went dead several seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

    Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

    http://www.gallawa.com/microtech/cap_test.html

    http://www.gallawa.com/microtech/xformer.html

    OR, we have the service / repair manual for this model and have uploaded it to our site here to help you.

    The parts list is here.

    You can order Dacor parts
    here.

    If you prefer to order the original Sharp parts (which are usually considerably less) look for the part number on a tag on the transformer or capacitor (whichever is bad).

    The part number for the capacitor will be similar to RC-QZBOl8MREO and the transformer number will be similar to RTRN-BO59MREO. Again, these numbers are examples to show Sharp's number format.

    You can order Sharp parts from Encompass here http://tinyurl.com/7qy85y or you can call them toll-free at 866-779-5835.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

    May 18, 2009 | Sharp R-1480 Microwave Oven

    1 Answer

    Tricky touch pad on Sharp R530 es microwave oven


    There are two options here:

    1. Order a new control panel frame which has the keypad, trim piece and door button already installed and swap your control boards into it.

    The original part number FPNLCB346MRK0 has been replaced by part # FPNLCB346MRK0B and it runs $58.28 plus shipping.

    2. Disassemble your control panel frame, peel off the old keypad and stick a new one on.

    Even though the keypad alone runs only $35.66, this job takes a lot of time and labor.

    If you (or someone you know) might want to replace just the keypad yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

    Whichever option you choose, we have the service manual for this model and have uploaded it to our site here to help you.

    You will need the
    free Acrobat Reader to view or print it in case you don't have it already.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

    Jan 18, 2009 | Sharp R-530ES Microwave Oven

    1 Answer

    Stuck on but no power


    it is the problem of the faulty heating element .the heating element needs to be replaced to solve this heating problem.

    Dec 29, 2008 | Microwave Ovens

    1 Answer

    Sharp microwave is dead


    If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

    If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

    If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

    If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

    Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
    http://www.gallawa.com/microtech/cap_test.html
    http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
    http://www.gallawa.com/microtech/xformer.html

    You can usually find exploded views Sears parts site.

    BUT Once you have the part numbers, the best place to order Sharp parts is Tritronics.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

    Dec 01, 2008 | GE XL1800 1100 Watts Microwave Oven

    1 Answer

    Sharp R-1450 microwave


    This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

    On these, it's usually a broken tab on the upper switch holder.

    One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

    That sounds like what's happening when you hold the Start pad - maybe you're moving the frame and chassis enough to help it work.

    Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

    Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

    There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

    The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

    Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

    If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

    You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

    The best place to order Sharp parts is Tritronics.

    If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

    William E. Miller
    prototech@usa.net
    http://www.microwavedisplay.com

    Aug 19, 2008 | Microwave Ovens

    1 Answer

    Oven stopped working. No lights, no control panel. nothing


    It should be worth fixing. A microwave can be dead for many reasons.

    If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

    If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.

    If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

    If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

    If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

    If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

    If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

    You can probably find an exploded view by entering your FULL model number (R-1470) here: http://www3.sears.com (the 3 is correct)
    You can order Sharp parts from Tritronics at http://www.wehaveparts.com

    Please write back with more details if you need further help.

    We're happy to help and we appreciate your thoughtful rating of our answer.

    Dec 17, 2007 | Sharp R-1470 Microwave Oven

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