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Title: HUM appears a few months after purchase
Review: Now, the SR705 is a beautiful receiver. I got one about a year ago and it was silent and clean running (warm 'though). But about 2 months ago a HUM appeared and remained no matter what I did, including disconnecting EVERYTHING except one speaker and trying every other outlet in the house and turning off everything else in the house. Everything. I sent the unit back for repair and four weeks later it came back from the factory. The HUM was still there, as loud as ever, maybe louder. I'm going to have to take it back again and probably exchange it for something else. It's unusable as is. I've researched the blogs [...] and apparently (although I didn't know it before I bought the SR705) this HUM problem has shown up on units more than a few months old. What's wierd is, the factory 'fix' didn't fix it at all.
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