all of a sudden, the jets in the hot tub attached to to our in ground pool, won't turn on. Figures, right when yiou have company that wants to use it. I suspect its the push switch/button which is mounted in the wall tile, just below water level. When you push the button, it no longer clicks to turn on. I tried to unscrew it, it turns but doesn't unscrew. Perhaps it prys or pops off but I'm afraid I'll break it or the tile because it's mounted almost flush with the tile. I'm hesitant to call for service because we just spent a few hundred to fix the heater and I'm almost positive its not related to that. Any suggestions here? thanks for reading this post!