Question about Panasonic NN-C994S Convection/Microwave Oven

1 Answer

NO power display dimesnion 4 range national microwave NNC 2000P MODEL

All of a sudden when I started my microwave oven .I found no power indicator in display and nothing is there.On checking power side I found everything ok and also there is voltage coming . so I switch off after opening cover for inspection I cannot find any burning component , all is brand new condition, oven is 4 yrs old and sparingly used; ONly after I switch off supply from socket .I notice there is back voltage at terminal of plug top indicating some built up charge when the oven was connected and same appeared back after switching off (this is mentioned just to indicate for some clue in locating fault)

Posted by on

  • 1 more comment 
  • rajendra panchal Mar 21, 2007

    Thanks can u email me link for circuit diagram layout so that i can located this transformer, I can see transformer (brown colour) fixed on circuit board of display.Is that the one. is there any way to first see whether voltage is coming to primary side? You mean replace transformer or first to check other component on primary side.Your guidance will be helpful please

  • rajendra panchal Mar 21, 2007

    Further to my reply .I wish to update that I opened PCB with transformer from rear side of Front display board.
    I checked Primary it has 240 volts and also secondry all voltages viz-30 v etc are there .Pl note that from this board a connector jumper gets connected to other board )there are two PCS laid on back to back )which has micro swithes/ push button and LED display and other control button which are operated from front viz. time/temp/selection of oven etc etc
    What should I do next as there is no display at all ?

  • rajendra panchal Mar 27, 2007

    I REPLACED THE TRANSFORMER BUT ALWAYS ONCE AGAIN PRIMARY BECAME OPENED. ON THIS TRANSFORMER P1 AND P2 TERMINALS ARE IN FACT LOOPED WITHIN TRASNFORMER HENCE I SHORTED THIS TERMINAL AND MICRO STARTED WORKING BUT I WANT TO ASK IS IT CORRECT TO DO SO? WHY THIS P1 AND P2 IS GETTING OPENED , IS IT DUE TO OVERLOAD ??
    WHAT TYPE OF PROTECTION TRASNFORMER HAS INHERENT??
    KINDLY GUIDE ME

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 38 Answers

On front panel there is alow voltage transformmer the primary side isopen circuit replace

Posted on Mar 20, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Need user manual for National model no: NN-8655 Microwave oven user manual...


I would suggest that contact the dealer from whom you purchased the oven or call any number listed on the model tag of the oven.

Jan 06, 2014 | Panasonic Microwave Ovens

1 Answer

How do i fix a whirlpool microwave and range hood combo


869a8192-23d2-4ffd-9f6d-9d352dca9204.pngWhat is the model number? F-6 is a Microwave Relay Failure.
1. Check wiring to Relay 4903 for short circuits.
2. If wiring is OK:
• Unplug microwave oven or disconnect power.
• Replace electronic control.
• Plug in microwave oven or reconnect power.
Sea Breeze

Jul 25, 2013 | Microwave Ovens

1 Answer

Maytag microwave suddenly stopped working, overheated, nothing was cooking.


It is more than likely the magnetron is fried, to replace fuse! unplug microwave oven, remove top, "several screws" look to the right to the keypad control board, look down to a printed circuit board, clipped fuse should be near by, pop it out and replace with same current rating, assemble before testing, "lethal voltages present"

Apr 22, 2012 | Maytag MMV4205 Microwave Oven

1 Answer

I have GE Profile microwave model PVM1870SM1SS and last week while running, suddently it shut off. There is no power, display buttons and stopped running. Please advise.


From the description a major part has failed, the magnetron is suspect because it suddenly shut down in cycle, if the unit is less than 7 years old it probably has a inverter board and tends to fail, also there is the possibility the keypad control board has stopped working. The microwave in my opinion is worth getting checked out and repaired, but it will be expensive.

Apr 03, 2012 | GE Profile Spacemaker 1.8 Cu. Ft....

2 Answers

I have a whirlpool microwave oven over the range. Model GH 5184xps-4 when I press start, it comes on for one second then it shows a code -F7- and stops


TOUCH PANEL & MICROCOMPUTER BOARD TEST FOR WHIRLPOOL....

The microwave oven may be provided with a self diagnostic routine that can be operated

through the touch pad keyboard. To enter the self-diagnostic routine:

1.While pressing the CANCEL keypad:
a) Open the oven door.
b) Unplug the microwave oven for 2-seconds and plug it back in.
c) Release the CANCEL keypad and close the oven door. You will see the following display.

CHART
NOTE: The humidity sensor test results will appear on the display after 8-seconds.If the tests are successful, "OK " will be displayed. If one or more of the tests fail, "ERR " will be displayed.. 2.When a keypad is pressed, a number according to the test chart will be displayed. When no keypad is pressed, a blank "O" (square) is displayed...

POWER FAILURE & FAILURE CODES
Power Failure: After a power failure, the WELCOME screen will be displayed.

F2 Keyboard Failure: Refer to the Tech Sheet and conduct a touch panel continuity test.

F3 Humidity Sensor Failure: Refer to the Tech Sheet and test the sensor.

F6 Microwave Relay Failure: Check the microwave relay.

F7 Microcomputer Board Failure: Change the microcomputer board.


Hope helps.

Apr 12, 2011 | Whirlpool Microwave Ovens

2 Answers

No power in the microwave but there is electricity at the wallplug


No power and or NO lights at all,indicate a blown fuse.
Locate and replace the fuse inside the unit.

Feb 25, 2011 | Maytag Appliances Over-the-Range Microwave...

Not finding what you are looking for?
Panasonic NN-C994S Convection/Microwave Oven Logo

Related Topics:

220 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9098 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Devabhakthuni...
Devabhakthuni...

Level 2 Expert

225 Answers

Are you a Panasonic Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...