Question about Sharp R-202EW Microwave Oven

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SHARP R-316F The lighted Display section on my R-316F SHARP microwave went dark today. I can still see the numbers faintly there in the black, but it's almost invisible. The interior light and all other functions seem to be working fine. Purchased 6/28/04. Any ideas? patgunderman@att.net

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  • 2carrs Nov 23, 2008

    I have exactly the same problem. The display went dim and then completely out. Did the repair idea work? Was it difficult to do?

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I had the same problem with my Sharp R-330F.  Everything worked fine except the display was very dim.  I figured out that the backlight LEDs weren't receiving any power from the microprocessor board.  (Three surface-mount LEDs on the circuit board behind the display).  I couldn't trace the problem past the microprocessor board, so in the end I manually connected the LEDs to the +15V supply on the board via a 4k7 resistor - cut the track to the microprocessor board, soldered a 4k7 resistor to it, and soldered the other end to the ground of the bridge rectifier on the board.  4k7 was a guess but the brightness is about right.
The display works fine now, but this repair isn't for the inexperienced.  Actually this is the same repair suggested by the "guest" above, but when I first read that solution I thought it was a joke.  It isn't, and it works!!

Posted on Dec 16, 2008

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Easy to fix you need to cut the tracks to the led lights then solder 2 wires to the leds next use a 1k resistor on one of the wires then conect it straight to the power surply just after the bridge rectifier noteing+ and -

Posted on Mar 06, 2008

  • Everett Mounce May 02, 2013

    CAN YOU SEND ME A DIAGRAM OR PIC OF THE FIX SO I CAN SEE THE PLACE TO PUT THE WIRES emounce@accesshsd.net

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Posted on Jan 02, 2017

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