I cleaned the inside, vacuuming up all big debris. Wiped and scrubbed all grease and debris. My daughter and I unplugged stove. The Glass top was taken off to put the new back burner unit on. Vacuumed everything/mess inside. Wiped it all down. Then took new board and top plate and put them in. Everything looked clean and new now. I live in Texas the roach state. Once all is clean and put back together the oven works like new. The parts were a good price and cheaper than replacing the stove. This was a wonderful experience and my daughter was a born mechanic.