thats an ongoing problem with that particular model.. i had one.. got it fixed under warranty and just over a year later the same problem happened. I've seen other people complain about that defect to no avail. Wish i could help.
You would think that most people would go directly to the source of their problem and contact the manufacture of the product. But that is rarely the case. Like they say common sense isn't all that common.
"In the beginners mind there are many possibilities, but in the experts mind there are few."- Shunryu Suzuki
"Do it right or don't do it at all"