skybox f5 annoying noise problem

[mrdjc]

Hi I have a skybox f5 everything works great but when I go to a hd channel for example when I go to bbc one hd a screaming whining loud noise comes out the box and it don't stop, can someone help please

[mrdjc]

i can confirm this noise happens as soon as i put the lnb cable in and when i remove the lnb cable the noise disappears, i have tried various firmwares but have the same issue, can anyone help please?

[beersy]

if you have a mate with a sky dish take it there and try it mite be you dish