We built a new house and purchased all New LG appliances thru builder and the LG Cooktop worked great for about 6 weeks (Used only around 20 times) and then stopped responding to any touch commands Tech came out and said it needs whole PCB Printed circuit board replaced and that he order a replace PCB That was a month ago. we called again and they said it's on back order and we may see it in another month? We had to buy 2 hot plates to use. (See Photo)  LG should be replacing the whole unit with a new unit that has a updated PCB already init!!