Question about LG LMV2055ST Microwave Oven
My LG microwave is about 18 months ol and worked fine until last night. My daughter used it, removed the item, closed the door, and left the room. She noticed a sound when she closed the door, but thought it was the fan. Less than a minute later my wife smelled something burning/electrical and quickly traced it to the microwave, which was empty but apparently running. She hit the stop button - no response. She opened the door, it stopped; closed the door, it started again without pressing a button. I came in to investigate and found that, when the door was closed it automatically started the "humming" sound that the unit typically makes when turned on - but, no fan noise (fan not on). No response from any buttons, though the display lights still work (shows time of day, no error codes or anything). I pulled the plug in the upper cabinet. The inside of the microwave was very hot. The middle/top of the right inside wall (perferations on wall) was extremely hot (could only hold fingers on it for few a seconds, then too hot to touch). The unit had a burning electrical smell.
I bought all new LG appliances when I refurbished my kitchen 18 months ago, and this is the second LG appliance to fail in the last three months. A serviceman had to replace the pump module in my LG dishwasher to the tune of ~$300 (just labor, the part was still covered) 3 months after the warranty expired. Now this. He said LG uses "cheaper" parts than other mfgrs. I think I'm beginning to agree.
I think the service call/diagnosis was $75. One yr p/l warranty is expired. May not be economical for service call, but might be if I could do repair myself. Any ideas on where to start? Thanks in advance for any help.
Alternatively and more seriously...
Since this is obviously a life threatening dangerous kitchen appliance, I think you should call the service centre / LG with this query and let them know of the problems which have occurred. But be nice, relaxed and above all detailed with the problems you have.
Bear in mind also any manufacturing guarantee you have with this appliance and underline the fact that this is not the first LG appliance you have bought new which has been faulty. Ask if there has been a product recall for example.
If they dont lever the charges of call out or an offer which is level to you and LG, tell them you'll make a video of your experience and put it on You Tube. Thats when you can start to become irate!
It definately sounds like there is a internal fault and this will not be repairable by you or at the least should not be attempted by you. Sometimes oven can do this if there is a programming fault and this definately sounds like the problem with the LG; I had a similar problem with my Sharp oven. Now I have a more mechanical cheap oven which does the job (Panasonic).
Posted on Apr 19, 2008
First you will need to answer a few quick questions between yourselves.
There are bits inside there that will happily kill you days after it has been turned off. (some even weeks)
For the cost of a replacement in this case, it's not worth it.
Posted on Apr 18, 2008
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It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.
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