The most frequent problems encountered with residential garbage disposals include mechanical jams from hard food waste or utensils causing a loud humming noise, tripped thermal overload reset buttons due to motor overheating, clogged drain pipes or P-traps preventing water evacuation, dead electrical wall switches or tripped GFCI outlets, and structural leaks originating from worn sink mounting flanges or cracked housing seals. Verification: Inspect under the sink for leaks and test motor rotation using a hex wrench.
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