Question about LG LTM9000 Microwave Oven
I thought it might be the result of a pwer surge, so ishut off power at the home circuit breaker.
Even with no power , the microwave continues to beep once every minute!
Where does the appliance get the power to cause the device to beep?
There is no battery. Could there be some charged capacitor in the electronics with enough residual charge to power the beeper?
How long would one have to wait for the appliance to reset itself once the power has been removed?
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Posted on Jan 02, 2017
First of all, microwave ovens do not emit ionizing radiation.
The only risk from any leakage is a burn.
Generally, microwave leakage only occurs when the door / door seal is loose or damaged or there has been an improper repair attempt.
You can select a model which lets you turn the beeper on and off by looking for that feature as you shop manufacturer Web sites, or in the store ask the clerk to pull the manual for you to examine, or contact the manufacturer's help center, support center, or FAQ.
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. LG / Goldstar owner's manuals can be downloaded here.
If you're interested in other brands, please reply back and let me know. I'll be happy to post contact info.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Sep 28, 2008
test the high voltage capacitor,the rectifier diode or the magnetron. If all this are fine, test the control board.
The diodeand capacitors can be tested. The capacitor must be allowed dischargebefore testing, or you risk to get electrocuted, even if power is off.Capacitors can get discharged by shorting their two contacts.
Before replacing the magnetron test also the control board.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.
All locations, and description of this parts can be located using the diagram here: Counter top.
Parts must be tested to find out what is wrong.
Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason...
Posted on Aug 19, 2009
The fan will come on if you are cooking below and the area gets hot.... is this when it happens? Sometimes random beep could be a power blip... not long enough for a reset of all things electrical
Posted on Sep 21, 2009
It is possible that the interconnection link(s) between the two sockets in the duplex outlet have blown apart. Turn off power at the electrical panel for this circuit, remove the outlet from it's box, and check the interlink on both sides. If obviously burned, replace the socket. A better option is to run another duplex cable from the breaker box to the outlet from a new breaker, cut the interconnections on the new socket, and wire the new cable to the isolated part of the socket. This supplies full power to each half and allows both units to run at the same time.
Posted on Oct 19, 2009
That was a very long duration to have set for potatoes. It would have made the magnetron burnt by exeeding the limit and findinf there was no conductive medium by moisture , it has ended up burning the magnetron.
First of all clean up the inside and clean up the point of the magnetron beam.Now confirm on the inside to be totally dry.
Disconnect power and check inside for break of fuse to the magnetron.If the microwave does not heat on testing with a cup of water , then it is possible that the magnetron is cooked.
Confirm the cost for the unit to decide on replacement.
Hope this helps.
Posted on Aug 21, 2010
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