Hello- The 'hum' is the motor trying to turn. If the dishwasher has been getting louder recently, then the motor bearing has failed. The solution for this problem is to replace the motor. Occasionally the sump gets clogged, but this rarely stops the motor. The motor is about 125$, and is easy to replace if you can remove and re-install a dishwasher. Please acknowledge this posted solution. Thanks- Ed
Hi
If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound.
If it seems as a low water pressure then check the fill valve. Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete. Try cleaning the spray arm with a soft brush. The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes. Hope this helps...
Daniel
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