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Started making noise. found fan filter in rear plugged with dust. found noisy fan. It was very dirty. carefully cleaned it up and put 1 drop oil on bearing. Seems much quieter now. are fans replaceable? also what are significance of green and red LED's on control board? Both are lit steady.

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I think you did the right thing by just cleaning it. The fan is really there to help prevent the motor from overheating.
Overheating is typically the way breadmakers fail, so you've prolonged the life of yours by maybe another 5 years!

Light oil on the bearing and keeping the dust down is the right thing to do.
Well done.
Red and green lights will be simple diagnostics tell-tales. Both are lit - so no worries.

Posted on Feb 07, 2010

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Posted on Jan 02, 2017

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Tip

Fixing a noisy fan


As fans in electronic equipment get dirty; the dust and dirt will slowly work its way into the mechanical components of the fan, grinding the smooth plastic surfaces like sand paper. This keeps the fan from moving smoothly and eventually produces a buzzing or whirring noise from the resulting friction. In time, the increased heat and friction will simply burn the motor out and it may stop working entirely.

Some choose to just ignore the problem or simply disconnect the fan to stop the noise; however, the fan usually serves an important purpose cooling the machine. Cases are carefully designed to circulate air and even one fan failing out of several can change the airflow in such a way that pockets of heat can become trapped above chips and under critical components. While many think that washing or cleaning the fan regularly may resolve this issue, often it does not. In fact, it can make it worse by removing oil and grease intended to lubricate the parts and keep them running smoothly. Removing the dust itself will also not replace the lost plastic as normally smooth surfaces will still be scored. Many times after cleaning fans become even noisier.

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