Weird hum..

May be the condenser fan on the bottom in the back.. Sometimes they get crud on the blades, that builds up over time, which can cause it to make a weird sound when the fan kicks on.. or, the fan blades could be hitting something.. every now and then I gotta pull the fridge out to re-tape the carboard backing that conceals the fan, or clean the fans blades.. At one point I had to replace that fan, which is easy - it just plugs into a wire harness.. the bearings had worn out in the fan, so it was making a racket..

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Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..