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I've got a Sharp R-540DK microwave. The touch screen is blank, but seems to respond to touch. How do I fix it? Anthony

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  • ajgr825 Nov 20, 2009

    Can I get the part and fix it myself?

  • ajgr825 Nov 20, 2009

    Did you say the problem may only be a lose connection?

    Can the LCD display board be purchased separate from the control panel?

    The first answer estimated the fix would cost $35, but the control panel costs $65.


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  • Microwave Ovens Master
  • 5,138 Answers

If you are talking about the LED display you will have to replace it! also pull lited off look where you open and close door thier is relays that sometimes move back unscrew them enough to push them as close as you can to door locks/hooks then retight them down close door and see if LED display will come back on other wise micro/display will need to be replaced.sometmes resoldering Panel board will do it.

Posted on Nov 21, 2009

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  • Microwave Ovens Master
  • 19,396 Answers

Hi.

If the oven is functional, then the problem may be just the LCD display.

The LCD display is part of same assembly with control board and button pad.

The repair is done checking the LCD display connector on control board, and then decide if to repair the existing board or replace it.


Here the part:

FPNLCB303MRK0

Posted on Nov 20, 2009

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  • Master
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Hello. Your control panel assembly needs to be serviced. Generally, if you take your microwave into a repair shop they will fix this issue for about 40 dollars. You may want to replace rather than repair with new ones being so inexpensive now.

Posted on Nov 19, 2009

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Posted on Jan 02, 2017

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