Question about LG LMVM1945 Microwave Oven

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F-9 after 10 sec.run time

Tech says invertor where can i find this componet

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Assuming yours is an LG, for Goldstar / LG / L.G. help, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or visit here.

If yours is not am L.G., please reply back with your brand and model number so we can help you.

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

Posted on Sep 26, 2008

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Panasonic nn ct776 invertor/magnetron


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Nov 16, 2013 | Samsung MT1066SS Convection/Microwave Oven

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Neff b6774N0gb/02. Inner glass shattered. replaced. Internal fuse blown. replaced. Now microwave working (heating water) for approx 5 sec, then switching off, beeping and showing E1 fault. Also display...


Usually if this model stops after approx 3 secs it is an invertor or mag fault. Check that the aerial cover is clean Page 3 of the breakdown part position 315. If this is really grubby it would be the cause of the door shattering. The PTC is not used on the microwave function so may be an additional fault. Check also the alignment of the door switches as this can also cause a similar fault. My best guess is if you remove the mag, you'll probably find scorching on it and it (and the invertor) will need replacing.

Mar 25, 2013 | Neff Microwave Ovens

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Panasonic the genius prestige problem:::: it will run for about 10 secs then shut off, turn it on again real quick it will run another 10 secs...everything else works on it, the broiler,bake, but when the...


Before spend $$ on replacement boards, make sure anything attached to it is powered off. Unplug TV for 5mn to 15min. Plug back in and it should power on. If not leave unplugged overnight before spending on a replacement board. We have to do this 2-3 times per year when someone forgets to turn off auxiliary components (receiver, DVD, cable box, etc) first. It has always come back on.

Mar 16, 2013 | Panasonic NN-SD797S Microwave Oven

1 Answer

After 10 seconds oven will go into( see hand book ) in window. model NNA883.


I don't know what the oven goes into but I would guess it requires either a magnetron or invertor board, or both.
Shutting down soon after switch on can sometimes be the result of those items failing.

Feb 21, 2011 | Panasonic Microwave Ovens

1 Answer

F9 fault. I replaced the main control panel, with the led display. Still F9 fault after 9 sec. Also get a high pitch humming sound at times. Heats most of the time & F9 does not always come up when...


That sounds like a problem on the invertor board. Unfortunately there is not a lot to be done on the board without a service manual and the needed experience.
Hope that helps.

Feb 03, 2011 | Kenmore 62622 Microwave Oven

1 Answer

Can't set the clock on a 1987 Quasar Superwave convection Microwave MQ8777BW


I had a similar problem--no manual--but found this way to set the clock:
1) Be sure colon is flashing (unplug and replug)
2) Press the 10 HOUR/MIN, 1 MIN, 10 SEC/MIN, and 1 SEC/MIN buttons until the correct time displays.
3) Press the CLOCK button.
Hope this helps.

Mar 24, 2010 | Microwave Ovens

1 Answer

My microwave panasonic starts and then switches off automatically in 15 secs, why does it do that?


if your unit has inverter on it then your magnatron or possibly the invertor PCB is faulty, to determine which you will need to replace either the magnatron or the invertor, or both, which is an expensive repair either way, a DIY repair on either part can be dangerous without the correct tools and training to remove. if you feel competent then post back to me, but you will need a supplier for these parts.

Oct 13, 2009 | Panasonic Microwave Ovens

2 Answers

Does not heat food


I had the same problem and was on the verge of destroying the entire kitchen in a fit of rage until I read MicrowaveSvc's post. Thank goodness it worked. I unplugged it for a few minutes, and now it works fine. THANKS MicrowaveSvc!!!!!

Jan 17, 2009 | Maytag MMV1153A Microwave Oven

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Kitchenaid ykcms135h intermittent problem.


if you are not a tech kindly take your microwave to a tech for repairs.the diodes or the cap high voltage is your culprit.good luck.

Apr 04, 2007 | KitchenAid KCMS145J Microwave Oven

5 Answers

Shuts down after 59 sec


Chances are you have a bad damper switch or wiring. A sample photo is here: http://207.234.249.73/mwd/damper.jpg It might also be a problem with the humidity sensor or a problem with the control panel, such as corrupted code or bad connections.

Dec 20, 2006 | Sharp R-1850A Convection/Microwave Oven

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