Hi. we have a panasonic nn-cf778s inverter oven. my wife slammed the door shut too hard. it tripped the circuit mcb and now the only sign of life is the top panel background flashing and nothing else will work. any ideas please. bern

William Miller

• 9179 Answers
• Posted on Jan 02, 2009

SOURCE: Hi, I have a NN-C784MF

Chances are there are other bad parts blowing the diodes, most likely a MOSFET.

Also, the ESR of the electrolytic capacitors should be checked and all board connections must be checked and resoldered if suspect.

If you're not experienced in troubleshooting switched-mode power supplies (inverters) then you can probably save a lot of timer and money by replacing the whole inverter.

You can find the nearest spare parts supplier by selecting your country then the support links at Panasonic.net.

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

SOURCE: Door Release Button not working on Panasonic Microwave NN-T664SFT

The problem I had experienced with the Door not opening easily will be resolved by removing the micowave oven top cover with a tamper proof torx head, replacing the door switch and reinstalling the top cover.

SOURCE: panasonic NN-CD997S microwave

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

SOURCE: just had a panasonic inverter nn-cf778s delivered

No it definitely isn't. Sounds as though they got the interlocks connected incorrectly, or the control panel is defective.
Either way, you definitely need to send it back to where you bought it.

SOURCE: Door closes but will not

There are micro-switches in the control panel that are out of adjustment or sticking.
The switches have to make contact with the door latches when the door closes.
Adjust the position of your switches.