PVR 9300T, owned for about a year.
Perhaps since the latest retune, perhaps not, there has been a buzzing sound and a blue line across the screen, especially when there is a lot of white in the picture.
Digital terrestrial freeview.
Happens with real time watching, and when watching recordings.
I thought it was my JVC LCD TV, but when I view using inbuilt freeview on TV, no interference.
Can anybody advise?
Welcome to the forum 
How are you connecting the 9300t?
If by scart lead then try reversing it - ie plug the end that was in the TV into the 9300t etc. Unscreened scart leads can pick up interference from the output from the TV. Using a fully screened scart would correct that as would using a one directional cable.
If HDMI cable then I'll leave it for others to suggest a cause.
Thanks for the welcome.
I changed the scart lead round and it made no difference, but I had it connected through a signal enhancer since I have a weak signal here. I have changed the lead to come direct from the screen to the Humax and the interference sound has gone - THANK YOU.
I have waited for a couple of days and there has been no further problem.
What I can't understand is that I had the same set-up for 6 months (new screen then) with no physical change. Why would this interference start? Would it be something to do with the Freeview retuning? 
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