Question about Panasonic NN-H965 Microwave Oven

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Panasonic microwave NN- V453 stopped working

Ceased working when the internal
fuse went. Fuse is 15amp 250 v. Replaced with new fuse. Microwave now works but the turntable rotates more slowly. The machine is also quieter, but seems to heat food more quickly. The old fuse was grey and the new one is white. We were told the colour did not make any difference it's just a different manufacturer. Does the machine sound ok?
Many thanks.
Pen

Posted by on

  • William Miller
    William Miller May 11, 2010

    The fuse may be white or gray, as long as it's a ceramic fuse.

    Have you measured the
    voltage at the outlet? If that's off, current and power will be
    affected. It should be about 110-125VAC.

    If it's okay, I would expect that something in the high voltage section is failing.

    Once it fails hard, it may be easier to to troubleshoot, so let us know how it goes.

    While a microwave should never be left
    unattended, it's even more important when one is exhibiting a failure.
    So play it safe and stay with it while it's running.





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5 Suggested Answers

MicrowaveSvc
  • 8820 Answers

SOURCE: Panasonic NN-S789WC - No power on Display, Fuse OK, bulb Lights

The fuse will be a white or gray ceramic fuse, and you really can't tell if it's blown without actually measuring it. If a new fuse blows when you hit START, you probably have a shorted high voltage capacitor. If you have replaced the fuse and still have no display, then it sounds like there's a problem on the control board. The control board has a built-in surge protector which can short (and smoke) and when it does, it will cut the power to the control board, but not blow the fuse. We repair these nationwide for only $39.95 postpaid. If you or a friend want to check it out or send the control unit in for serivce, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

Posted on Mar 02, 2007

MicrowaveSvc
  • 8820 Answers

SOURCE: I need to replace the

That's a UK model, so I'm not sure if it might be more complicated than US models.

If you don't have an obvious access panel (or one mentioned in your owner's manual) then the outer cover will have to be removed.

In some over-the-range models, that can mean having to take the oven down from the wall! For safety's sake, that should be a two-person job and it's really helpful if you have your original installation instructions to do this.

Many models use halogen lamps. You must not touch the new one with your bare skin as the oils will shorten the bulb life.

If you still need help, I would suggest you contact Panasonic UK support here.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on May 30, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: Microwave panasonic nn v453 swiches

In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jun 29, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: microwave light door turn table works but does not heat up food

In most cases, this is a problem with the inverter or a bad magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jul 02, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: Internal ceramic fuse repeatly blown.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead several seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount. See: http://www.microwavedisplay.com/doorsw.txt in this case.

If this unit has an inverter some parts are difficult for the average do it yourselfer to replace, such as parts which are spot welded, not using removable connectors.

In such cases, it's best to replace the entire inverter.

Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on them.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

You can find an authorized Panasonic servicer here.

You can order Panasonic parts from
Encompass or by calling 866-779-5835.

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

Posted on Jan 10, 2010

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Internal ceramic fuse repeatly blown.


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead several seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount. See: http://www.microwavedisplay.com/doorsw.txt in this case.

If this unit has an inverter some parts are difficult for the average do it yourselfer to replace, such as parts which are spot welded, not using removable connectors.

In such cases, it's best to replace the entire inverter.

Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on them.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

You can find an authorized Panasonic servicer here.

You can order Panasonic parts from
Encompass or by calling 866-779-5835.

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

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

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