My LG electric dryer (purchased new in 2010) does not turn on anymore. The light inside the drum comes on still when door is opened, but nothing happens when I press the "on" button. I took it to an appliance repair person who said it may be the control board and he wanted to charge $350 to repair the machine. So we decided to just do it ourselves, the problem is finding the right part, that is if the control board is what part needs replacing. PLEASE HELP! What part does it sound like needs replacing? 