Display reads clean filter even when the filter is out is there a nother filter inside

Depends if it was dim when new then not a lot you can do
if it has gone dim , you have 2 options
1 unplug it and put plug in front of oven door,then remove all cabinet screws.locate the display control printed circuit (under display)take photo of wiring with phone to aid reassembly ,unplug and remove printed circuit board screws and board,clean display screen and window ,if was clear then either obtain replacement panel or take panel into radio or electronic repair shop and have them check and replace any poor electrolytic capacitors, this usually cures older ovens ,but if 6 0r 7 years old displays themselves dim and need replacing.ps if good at soldering just note these capacitor values uf and voltage and obtain at maplin and replace all observing polarity when fitting

This model does not have a brightness adjustment for the VFD display.

It may be a weak VFD tube due to aging or it may be that the rear of the display window and front of the display glass are very dusty.

Sometimes you can clean it inside to brighten it up.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you can detach the keypad connector (as per attached photo) then remove the control panel screws.

Be careful not to crack the glass display when handling it, or it's a goner.

Then you can use a soft cloth (not a paper towel) and a mild cleaner (not ammonia-based) to clean the front surface of the VFD display glass and the rear side of the clear bezel (display window) that's attached to the keypad.



Some connectors have a lock.
If that cleaning didn't help, then you have a weak VFD.

We can replace yours for $74.95. Details are here.

It's probably a weak VFD tube but it may be that the rear of the display window and front of the display glass are very dusty.

Sometimes you can clean it inside to brighten it up.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you can detach the keypad connector (as per attached photo) then remove the control panel screws.

Be careful not to crack the glass display when handling it, or it's a goner.

Then you can use a soft cloth (not a paper towel) and a mild cleaner (not ammonia-based) to clean the front surface of the VFD display glass and the rear side of the clear bezel (display window) that's attached to the keypad.

Direct spraying of cleaners on the keypad and steam from the cooktop can damage the controls.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.



Some connectors have a lock.
If that cleaning didn't help, then you have a weak VFD.


On a Whirlpool microwave, the VFD tube is almost never available separately, so if it's bad, you would have to replace the entire circuit board.

You can find links to helpful exploded view diagrams and order parts here.

I'd recommend that your bookmark this link to your favorites.

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

The filter is on the buttom of the front door. take it out and wash it. Just look under the door.

It may be a weak VFD tube or it may be that the rear of the display window and front of the display glass are very dusty.

Sometimes you can clean it inside to brighten it up.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you can detach the keypad connector (as per attached photo) then remove the control panel screws.

Be careful not to crack the glass display when handling it, or it's a goner.

Then you can use a soft cloth (not a paper towel) and a mild cleaner (not ammonia-based) to clean the front surface of the VFD display glass and the rear side of the clear bezel (display window) that's attached to the keypad.

Direct spraying of cleaners on the keypad and steam from the cooktop can damage the controls.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.



Some connectors may have a lock.


If that cleaning didn't help, then you have a weak VFD.

On this model, the VFD is not available separately, so you would have to order a new control circuit board for it.

You can find links to helpful exploded view diagrams and order parts here.

I'd recommend that your bookmark this link to your favorites.

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

If the model number is correct, there is a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:


http://pcappliancerepair.com/model-display.php


The line fuse is listed as item 47.

You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need additional assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

If the model number is correct, there is a small input line filter board with a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:

http://pcappliancerepair.com/model-display.php


The line filter is listed as item 1420. The fuse will be mounted to this board.

You can purchase replacement fuses at any hardware store. You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

1. Sometimes you can clean it inside to brighten it up for a while.

2. In some cases, we can replace the VFD to brighten one up if it's available for a given model.

3. The last solution is to replace the control circuit board.

For more specifics on the options 2 & 3, we would need your brand and full model number.

Please note that FixYa is not currently notifying us Experts when Clarification Requests are answered.

To allow us to help you effectively (at no charge), please post a NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, as well as your symptoms, "dim display".

As for suggestion # 1, cleaning:

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you can detach the keypad connector (as per attached photo) then remove the control panel screws.

Be careful not to crack the glass display when handling it, or it's a goner.

Then you can use a soft cloth (not a paper towel) and a mild cleaner (not ammonia-based) to clean the front surface of the VFD display glass and the rear side of the clear bezel (display window) that's attached to the keypad.

Direct spraying of cleaners on the keypad and steam from the cooktop can damage the controls.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.

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

the fan may be clean, may be fan bush struck thats why fan running not properly, check the internally inside the microwave oven , you should carefull inside micro wave oven very high voltage .