Three blinks is the main fan motor. You simply grab a blade with the needle-nose pliers and pull straight up, they're a friction fit. When you replace it on the new motor, make sure it's slightly below the level of the bowl but NOT rubbing at the base. It has to be allowed to run freely. Also, note the polarity of the old motor and maintain it for the new one, if the fan runs backwards, the smoke volume and velocity will suffer greatly.
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