Question about Sharp R-530ES Microwave Oven
The display screen which showed a red countdown now only shows a few red dots which I can no longer decipher. How can I repair this? Thanks, Angelina
regularly repair display / control units for customers nationwide by
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William E. Miller
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Posted on Jul 11, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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In this case as the display does not show a clock then it seems the program controller is not working correctly. So check power - step down supply, if the pads are responding- if not faulty pads. Also the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean,solder and reset the board.
Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html
Now unless the display works and the processor starts to switch on the MAGNETRON , the table and light will also switch on as it must heat.
So it is necessary to check the main controller unit as it seems to be the suspect..
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