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Saving my Sharp microwave oven - Part 1

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David HK:
I shall try to insert an Excel file showing the Matrix table.

 Microwave matrix table.xls (13.5 kB - downloaded 563 times.)

Lets see if it works?

Mary B:
If memory serves me that outside track was a static ground circuit and connected to the metal frame.

Norm:
I also have a Sharp microwave oven Model R-139-RW, manufactured in March 2002.
No trouble with that yet....but the display doesn't light up.....No problem there tho',
Good old LED flashlight shining at an angle lights up the display most of the time I
really don't need it anyway.....most things like, I just push  baked potato button twice and
leave it to the sensor and the baked potato comes out perfect,  rice button for oatmeal
and I watch it rise to max height in the bowl and remove......beverage button once to
reheat a cup of coffee ,twice for a really hot cup of water.....etc.

If it ever gets to the point like yours .....guess I'd just salvage parts.

   But nevertheless I'm in awe of people that can do what you did...
Excellent work  David HK. !
Norm.

chunte:
Hi David,

Thanks for this write-up. For me, my stop/reset button just stopped working and thanks to your efforts, I used an external switch wired to the pins 4 & 10 of the board. At least for now, I can still get access to it until the next button fails.

Did you printout the entire PCB and paste together your own flexi-circuit? Really curious how you did it and if you still happen to have the PCB files you made?

Warm regards,
CT

Mary B:
Necro thread from 2011...

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