I have had this oven for 6 years now and haven't had any issues until about 2 weeks ago when the oven light wouldn't go out when closed the top door.  We unplugged it, turned off the circuit breaker nothing worked.  I called LG and they sent out a tech and within about 45 mins, he had to change the back wiring panel which turned my numbers a different color but he fixed the problem and my light is off, it had previously been on for almost 2 weeks before he fixed it.