Hi, our Cafe model chs950p2m1s1 is having induction cooktop issues. Intermittently when I turn any of the stovetop knob, it appears to turn on for a few seconds, then turn off. Also, it doesn't make the magnetic "induction noises" and the small fan doesn't kick on like it used to. The oven heats up ok, but again that fan doesn't kick on. I've taken the top off and checked for loose connections... I can't figure this out! Any ideas or help would be appreciated.

Tom