Question about Sharp R-1850A Convection/Microwave Oven

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Dim LED Lights

The Led lights on the control panel are very dim. They use to be bright but have gradually grown dim. Is there some adjustment I can make to increase the Led brightness?? Thanks Stacy

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Re: Dim LED Lights

We can replace the VFD tube for you. The total cost for this repair is $71.06. For more information, our site is linked at our listing here on FixYa:

Posted on Sep 23, 2007

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Dim display panel

Hi. The service manual is here - perhaps your solution is here too:

GE JVM1790SK Service Manual

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Dimming Microwave Light - Breville Support
Apr 10, 2014 - Occasionally, when using power settings that are lower then the normal 100% cooking power, the light inside the microwave cavity may dim.

Dec 21, 2015 | Microwave Ovens

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Product is GE Microwave (Spacesaver-type) JNM1731DM1BB. New surface light bulbs installed. Unable to turn them off or change from bright to dim

Bottom lights are controlled through relays on the main control board which is mounted on the back of the touch pads (control panel).You can check and see if wires are touching each other on the board but my guess is the board is defective and needs replaced.

Apr 02, 2015 | GE Microwave Ovens

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The display on my Sharp Grill 2 Convection Model R 82ojs-f is too dim to read.

either the display is bad or the unit may have a setting in the menu for adjusting the brightness level

Dec 04, 2012 | Microwave Ovens

1 Answer

Fgmv174kfb dim display

The owner's manual (here) does not mention that as a feature, so I would assume the oven has a defect and would need to be returned to your dealer to be exchanged under warranty.

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

Oct 25, 2012 | Microwave Ovens

1 Answer

LED readout is getting very dim. I reset the computer but it's still dim, and only about half the numbers are visable.


The issue is with the display panel that is bad or the connection to the control is loose. TO check what is causing this issue you will have to take it apart and check the board, if bad then it should be replaced. Hope this helps...


Jan 07, 2011 | Microwave Ovens

1 Answer

Surface lights are not turning off and stay on Bright. Any thoughts on how to fix this?

Unfortunately they are controlled by the circuit board and it is not repairable. The board will have to be replaced.Depending on age of unit you should call manufacturer and see what they say < might repair free>

Apr 20, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

GE JVM 1650 Microwave Night Light does not work

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

Sometimes this will also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

In your case, it may just be a shorted dimming diode, a black diode usually located between the light relay and the connector.

(Not to be mistaken for the tinier red-bodied diode on the other side of the relay that protects the relay coil).

If it is shorted, you will have bright lights in both the bright and dim settings.

In case you or someone you know has the tools and experience to desolder and solder small components, the replacement rectifier diode is not critical and can be any of these:

1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007, NTE116, or NTE125 some of which are available form Radio Shack.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

Feel free to contact me directly (and please remind me of your full model number) 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



Feb 13, 2009 | GE JVM1650 1000 Watts Microwave Oven

1 Answer

When new microwave is turned on, the lights in the kitchen dim.

Sounds like your microwave's outlet is on the same circuit with the lights.

High-current devices like microwave ovens should be on their own breaker if possible.

If the dimming is very slight, it may be okay.

If it's considerable, it may be a good idea to run a separate line to the microwave's outlet - especially if it starts blowing your breaker!

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

Feb 04, 2009 | Samsung MW5351G Microwave Oven

1 Answer

The digital display is very dim and hard to read even in the dark. Is there a way to adjust the brightness?

I have a Sharp Carousel 1.5kW microwave oven with model number R-310F(W)C. The LCD dispaly on my unit recently became very dim. After check the small circuit board on the front panel, I found that the problem is caused by the LCD backlight driver which drives three surface mount LEDs. As the LED driver is inside a chip built on a small daughter card, it requires a replacement daughter card, or the entire circuit board for display and keyboard. A simple alternative solution is to cut the link between the three LEDs and their driver, then build a small circuit to drive the LEDs. I can provide the circuit diagram if interested.

Apr 13, 2008 | Microwave Ovens

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