Question about LG Microwave Ovens

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William Miller

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SOURCE: Want a user manual of a microwave oven

L.G. / Goldstar owner's manuals can be downloaded here.

If it doesn't show up in the search, I would call or e-mail them via the CONTACT US link at the top right.

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

Posted on Dec 08, 2008


William Miller

  • 9179 Answers


If there's no obvious removable cover over the bulb (most often on the rear or side) and the owner's manual doesn't address it, then disassembly will be required.

Always unplug a microwave before removing or installing any bulbs.

If it's an over the range type, remove the vent grille across the top and see if bulbs can be accessed there. There may be a panel on the bottom covering the light(s), instead.

If not, chances are you'll have to remove it from the wall, then remove the outer cover. If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

Once it's out of the wall, the outer cover (wrapper) will need to be removed, just as you'll need to do on a counter top model.

On a counter top model, be sure it's unplugged, but otherwise ignore the instructions above this paragraph.

The screws you need to remove should be pretty obvious, but a special driver (such as a T20H type or GTXH20-100) may be needed.

Be sure to put all the screws back in the right holes, since some may be special grounding screws.

Bulbs can be had in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

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

In the UK, LG customer support is here. You may find your owner's manual online here.

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

Posted on Dec 21, 2008



  • 1 Answer

SOURCE: LG make Combimode microwave oven not working

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The Main Board error codes indicate for most of occurrences that the board itself has not passed the start up checks that are built in but there are cases when this is due to peripheral like door safety switches, shorted elements etc. While it is quite worth to explore this yourself if you are a techie and feel confident, please do not attempt if you do not know for sure what you are doing. And yes- DISCONNECT THE POWER PLUG BEFORE YOU ATTEMPT TO REMOVE COVERS and keep it disconnected till the work is over.

Check care fully for the looseness in all the connectors that go to the main board behind operating panel and the door switches, thermal cutouts and magnetron itself. you need not to know about these components, you are just looking for loose connections. If you find any - try to unseat and then seat them firmly. This alone will solve more than 50% problems. Pay attention to the green flat ribbon like cable that comes from inside of operating panel and goes in on large blue socket of main board. You need to pull a blue long tab on the socket itself away from board before you can disconnect the cable, and push it back after cleaning side surface of cable and putting it back in previous place. If this cable is loose, some or all buttons of panel will not work.

There are instances of complaint that the microwave platter starts rotating with or without the sound of internal cooling fan when door is opened - in 99% cases it is upper door switch - it's actuator - dark brown tab which comes out when the door is opened is failing to come out fully. You may attempt to set it right yourself if you are a good hand in repairing small components or obtaining exact replacement is not difficult from repair shops. Its technical name is micro- switch and you either will need to tell the size and no of wires coming out of it or the best is to remove the same and show it in the shop to get exact replacement. In my case the internal leaf spring needed stiffening and it worked fine. Similarly other door switched also cause unexpected things but usually it is small problem.

Although if you leave power plug connected and power on during nights, and fine one fine midnight that the appliance is making sound, usually it does not mean the microwaves are working inside. It could be opposite of the thing described above. But - why to leave it on during nights? Best practice is to unplug it when not in use. This will certainly protect your appliance from voltage surges that are known to damage electronic appliances often.

One reader quoted non functioning of panel switches when a through wet cleanup was attempted- It is nothing but some how water or soap solution got inside the layers of panel switches which happens to be membrane type. Some switches may start functioning (usually the upper ones when water moves downwards due to gravity) after some time . The best possible safe solution would be to remove water by gently using a hair dryer on outer surface to heat it up so that the water in internal layers evaporates slowly bringing all buttons to previous level of functioning. Take care not to heat-up too much or the plastic panel may deform - use a 6 inch distance at medium heat setting and your patience. It might take a while but half an hour work is worth against replacement. If you are more confident- you may attempt to peel off delicate layers of switch board, clean them and reassemble back using thin double sided tape. Mind that even though you are not removing cover, appliance is to be disconnected from mains first.

Hope it helps.


Posted on Jan 26, 2010


  • 8909 Answers

SOURCE: m having lg microwave model

A simple safety teast.
Place 1/2 litre of water in a glass container. Measure the temperature of the water.
Place in microwave and heat on full power for 1minute.
Measure the temperature after it has stood for 1minute.
If the temperature difference is more than 9 degrees Celcuis the magnetron is working and producing about 700Watts of heat.
If your microwave is labelled with 900 or 1000Watts. That is about right.
If the temperature is less then the magnetron is not working properly and may need replacing.

This a only a rough guide and any doubts you should consult an authorised service agent.

Posted on Jan 18, 2011


D. Floyd Kolb

  • 43501 Answers



Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips



Posted on Feb 25, 2011

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