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Reverse polarity for DC amp cooling fan

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Did you know that some DC fans have to have the wires crossed as they will not work as supplied?

My amp fan failed Behringer H.O.S. so I bought a new  one ebay 10.80 clipped it into the same plug and micro socket and it did not work either, only smoked.

I took it to a amp repair shop and they replaced it and reversed the wires.

They tried to charge me for two hours work when the job would only take 20 mins.

So be mindful boys and girls that fan polarity may be the problem in some occasions that you can easily do yourself.

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