Question about Panasonic NN-P794SF Microwave Oven

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How do I disassemble my microwave oven door?

I have a Panasonic NN-P794SF microwave oven. The door will not latch closed.
The door latching mechanism consists of two hooks on the door end which mate with receivers on the microwave. I believe a spring has come loose, which would normally push the hooks down to latch the door when proper engaged.

I can hear the (presumably) spring rattling around when I swing the door.

Should be an easy fix, if I can disassemble the door without damaging it.

Thanks in advance!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: the door will not latch

The latch head (with hooklike projections) have a spring to keep it pulled down. If the latch head can be easily pushed up and falls back freely, then the monting tab on the back of the latch head is broken and it will have to be glued or replaced. The new part is better. To get to the door screws inside, you have to remove the choke cover, as shown in the photo. You can order parts for Sharp models from Tritronics at http://www.wehaveparts.com.

Posted on Sep 23, 2007

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SOURCE: Door Disassembly

Drilling a little hole from the inside-out and putting a little screw did the job in 10 minutes. Awesome recommendation. Thanks.

Posted on Jan 27, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Need door assembly diagram to

While I don't have that model's diagram, normally you have to separate the door panels (as shown in the attached photo) and then you'll see the previously hidden screws you need to remove.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

Normally the problem is not the spring, but a broken spring mounting tab on the door latch head (hook) assembly or the inner door panel.

If it's the door panel, it's usually easier and cheaper to use epoxy and some kind of hardware to fashion a new spring mount.

The door latch head (hook) is easy to replace or repair if that's the issue.

You can order Panasonic parts here.

We're happy to help you and we'd appreciate your thoughtful rating of our answer.
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Posted on Jul 23, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: door does not latch close

If you gently push up on the door latches (hook-like devices on the door) there should be spring tension. If they just flop right up, the spring is off.

Normally the problem is not the spring, but a broken spring mounting tab on the door latch head (hook) assembly or the inner door panel.

If it's the door panel, it's usually easier and cheaper to use epoxy and some kind of hardware to fashion a new spring mount.

The door latch head (hook) is easy to replace or repair if that's the issue.

You can order Panasonic parts here.

We have critical safety & disassembly info at our site, linked here.

Normally you have to separate the door panels (as shown in the attached photo) and then you'll see the screws you need to remove.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

cf0061c.jpg

Posted on Sep 02, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave Panasonic Genius Prestige Model

A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking TCOs or thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

The TCOs you need to be concerned usually with have all black or white wires only. Please reply with photos of your interior if you have questions.

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

If it went dead a few 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.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

You can order Panasonic parts here.

You can find an authorized Panasonic servicer here.

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

Posted on Sep 28, 2008

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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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Normally the problem is not the spring, but a broken spring mounting tab on the door latch head (hook) assembly or the inner door panel.

If it's the door panel, it's usually easier and cheaper to use epoxy and some kind of hardware to fashion a new spring mount.

The door latch head (hook) is easy to replace or repair if that's the issue.

You can order Panasonic parts here.

We have critical safety & disassembly info at our site, linked here.

Normally you have to separate the door panels (as shown in the attached photo) and then you'll see the screws you need to remove.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

cf0061c.jpg

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