If some bad odors are coming from your disposal, it can mean that it is not chopping up the food finely and there are drainage issues. Try putting lemons peels (not wedges, y’all) through it first and see if that removes the odor. If that doesn’t help or if the smell returns frequently, that may be telling you that that the disposal isn’t swallowing and chopping up your leftovers correctly.
Modern garbage disposal units connect to dishwasher drainpipes. This enables dishwashers to expel leftover food scraps and residue that would otherwise accumulate in the dishwasher unit. A common source of leaks is the area where your dishwasher and garbage disposal connect. These leaks most often occur when the hose’s clamp is not secure enough and when the dishwasher hose cracks. To fix this issue, simply replace the cracked section of the hose or tighten the clamp.
Make sure that there is power getting to the unit. Garbage disposals have an independent cord that is plugged into a wall socket beneath the sink. Unplug the disposal unit and plug another small appliance, like a desk fan, into the wall socket. Turn the appliance on to see if it works. If it doesn't work, check the breaker panel. If the breaker is flipped to the "On" position, there is an electrical problem on that circuit, and an electrician must be called in.
Disposers fasten to the sink drain fittings in a number of ways--some use threaded plastic nuts, others large hose clamps--but the mounting-ring assembly shown here is the most common. To remove the disposer, support it from below and rotate the large, 3-tab mounting ring at the top counterclockwise until the unit falls away. Remove the remainder of the drain assembly by loosening the three bolts and prying off the retaining ring. Push the drain out through the sink hole and clear away any old caulk or putty.
While it certainly isn’t always necessary to replace your disposal just because you’re getting a new sink or updating your kitchen appliances, it may be a good time to do so, especially if your unit is over ten years old. Since you already have professionals on the site, it may be more cost efficient and convenient to go ahead and replace an older unit instead of waiting for it to fail at a future date.
If the plumber’s putty has failed, you might be able to stop the leak by replacing the putty. To do so without removing your garbage disposal, loosen the retaining bolts until a gap forms, force the new putty between the pipe and flange, and retighten the bolts to secure the putty into place. If this does not work, then remove your disposal unit and reseal the flange. To do this:
If your garbage disposal just won’t turn at all, then it’s very likely that the disposal has lost power. Your unit may have blown a circuit, or it could be unplugged. First, check the plug for your garbage disposal to ensure that it’s secure. Next, locate the reset button on the underside of the unit, and push it. If neither of these things fixes the problem, look inside your electrical panel for signs of a tripped circuit.