Model Number: LRE3023ST
Brand: LG
Age: 6-10 years

I have an LG oven that takes a long time to reach the preheat temperature and once it reaches the set temperature it won't hold it. I can turn the oven off after a few minutes and it will be 50 - 60 degrees lower than the temperature displayed. I've replaced the thermistor and thermal fuse. I also inspected the lower element and did not see any damage. The lower element resistance is 17 ohms which seems to be in the nominal range. I'm considering replacing the control board assembly but I wanted a second opinion before I spent $140.