The vent hood has two problems. First, the mid-range blower speed and indicator light quit working. If the high speed setting is turned on, the mid-range speed indicator light works.
Second, the hood light works intermittently. Sometimes the light will not work at all. Other times, the light will come on when the hood is slid out, but the on/off button does not operate the light at all.
My neighbor, who worked in the electronics field for years, tested the touch panel and was not able to find any problems with it. He was testing the continuity of the push buttons and the connector where the wiring harness connects to it. No problems were found. He believes the problem is in the microcomputer board.

Kitchen Ranges - KitchenAid - KWVU205YBA Kitchen Hood