I attempted to install an LED powered single pole light switch, replacing a similar older standard switch. After replacing the switch and turning the main power back on, the switch did not work, nor would the power in 90% of my home. After troubleshooting the circuits one interesting phenomenon occurs: with the circuits all turned ON, the lights and outlets are only operational when the electric cook-top is turned on in the kitchen! Interestingly enough, the cook-top appears to be installed on its own separate 240 circuit w/ breaker. Any ideas?