Guest789789,
Thank you for taking the time to write to the Forum about your V+HD box.
Buzzing is never great especially when you're trying to watch your favourite shows. I would like to ask are you hearing this when the box is recording and also when the box is picked up?
I've run some tests from here and I can tell you that it's running well, with no signs of signal loss, timeouts or high demand in the area, which is good.
Take care.
Ben