I have cockroaches in Display of panasonic microwave

Cockroaches are notorious lovers of microwave ovens ! If they have found their way into yours expect to find damage caused by their faecal droppings which are acidic and can destroy wiring and flat wiring connections. Sometimes a good clean can revive things, but if that fails then the only remedy is to replace the control panel. That you may find to be more costly than buying a new oven.
Before removing the cover of the oven in attempt to carry out any maintenance such as replacing the Oven cavity lamp, make sure the oven is disconnected from the power point ! The voltages in a microwave oven ARE LETHAL !

https://www.manualslib.com/manual/652153/Panasonic-Dimension4-Nn-C988w.html

FFFF is not mentioned in the user manual, but there may be some helpful information or contact information in it.

PANASONIC Dimension4 NN C988W Operating Manual And Cook Book


This is not certain, but it may be a part that is expensive to replace according to this other web site for a similar model Panasonic oven. That person said their microwave was still working.

https://www.justanswer.com/appliance/6045n-good-day-panasonic-dimension-iii-microwave-convection.html

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Good day, I have a Panasonic Dimension III Microwave/Convection Oven 1983
Model NE-9910A.

I went to use it today and when I entered to nuk my coffee a FFFF display appeared where the clock normally appears. I went and found my operating instruction booklet and it indicated to "stop/reset" which I did. Next it indicates to contact a Panasonic Servicecenter. Can you help me out? ps. It still works great!!!!!

Answered in 1 minute
12/24/2011

FFFF means that your display control board has an internal short. The only way to fix the problem is to replace the display control board which is no longer available. If you really wanted to fix the microwave you'd need to remove the display board and mail it to a place like Appliancetimers.com to have the part refurbished. The cost to have the part repaired is usually about $200-250 or so.

---------------------------------------------------------- Good day have Panasonic Dimension III Microwave Convection

In many cases , cockroaches are found to habit within specially when not used and can spoil the main board, panel display and connectors. Remove the front panel and board and confirm and if so you need to wash the board and reset. Also it can be due to failure of the display or drive from the board

Clean the food off the inside top of the microwave Now,Or that noise you are hear will stop along with the microwave. The food gets on the Formica Squire which is how the micro waves heat your food. 1st unplug the Microwave then spray the inside of the unit with something like Fantastic or something strong and use glove so you don't burn you hand,Also if you have a scrub brush use it,And clean all the soap out and raise very well.

The display is part number AEDDHJ5W00AP.

You can order Panasonic parts from Encompass here or you can call them toll-free at 866-779-5835.

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.

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

Possible fault with the customer touch pad or the controls. Sometimes this is caused by insect secretion - cockroaches- which can make the controller processor board act with such erractic behaviour.
Try to remove the power, remove cover and remove the main controller board and control pad to be washed, cleaned and reset. take care of the strip connection and wires.

Remvoe the panel and see if there is any infestataion of cockroaches or insects into the display panel. if so remove and clean the bord properly using some petrol and a brush. make sure you do not damage the display or the board. Now check for any dry solder on the printed board , if bad do a touch up solder on the suspected dry points. check for the filter capacitors of the power supply and the regulators.
Check votage to the mP , solder the crystal and check.

i have microwave problems power trip when switch on the unit. please help me.

Sorry to tell you this but some ones has to. Your unit is shot. the cost of repair out weights the cost of a new one. you can get a basic unitn 800 wates for a bout 89.00 you cant repair for that. Try looking at Thrift store;s you can find good clean working microwaves for $25.00 or less no kidding. happy hunting DFD

cockroach may have invaded and damaged the keypad curcuit