I purchased this oven 1.5 years back. Its magnetron failed.
On finding out why it failed, the service personnel from LG confirmed that its magnetrons life is only 1.5 years.
Most of its functionality is useless. Makes loud noises. consumes lot of electricity. I would have bought a cheaper oven. The guys never gave a response for the cooking classes they promised.
After spending so much money, I feel cheated by LG.