If there is no item stuck in the blades of the disposal obtain the Allen wrench that should be attached to your disposal or that came with it. There is a breaker socket located on the bottom of most disposal brands. Place the Allen wrench in the breaker socket and turn it back and forth. By doing this you may be able to unlock the source of the problem. Just be certain that the disposal is not turned on when doing this.
Roll out a generous amount of Plumber’s putty to a uniform width making a nice snake-like gasket out of putty. Wrap the putty onto the rim of the flange. Push the flange back into position and put the bottom flange on with the clip holding it into place. Tighten the three screws evenly until all three are tight. Scrape off any extra putty from the inside of the sink. Now you are ready to lock the garbage disposer back in place, reconnect the drains and test for leaks.
Kitchen waste disposal units increase the load of organic carbon that reaches the water treatment plant, which in turn increases the consumption of oxygen. Metcalf and Eddy quantified this impact as 0.04 pound of biochemical oxygen demand per person per day where disposers are used. An Australian study that compared in-sink food processing to composting alternatives via a life cycle assessment found that while the in-sink disposer performed well with respect to climate change, acidification, and energy usage, it did contribute to eutrophication and toxicity potentials.
If water is leaking from the disposal it more than likely needs a seal replaced but also could be a more serious problem. A leak can occur at the rings that are installed around the sink’s drain hole, called the sink flange. In that case, it can either be that the rings need to be tightened or that the plumber’s putty is faulty and needs to be reapplied correctly.
You should first find out whether only the disposal is broken, or if the power has gone out completely in the areas near your kitchen sink. Try resetting the circuit breaker that leads to the kitchen, or replacing a fuse if you have an older electrical box. If the garbage disposal makes no noises at all when you flip the switch, you might also want to check under the sink to see that it’s plugged in.