mine is MK2..it is a fault (fan fault),because there are units that don't have this issue.also like I said in earlier post,Technomate offers sending replacement fans to people who have noisy boxes.they have to open the receiver and replace the fan themselves.the noise that I'm talking about is not a "whizzing" noise as if fan was in contact with something,it's a quite but very noticeable and annoying high pitched noise that literally rings in your head! it's unbearable.
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