Weird freeview signal issue

[jep]

Cheers Nick, I'll do a retune next time I'm at hers.

[megaphone]

Echo what others have said, check some channels aren't tuned into the wrong transmitter.

The aerial is pointing in the right direction, yes? Have a look and make sure it's pointing to Winter Hill.

Did the aerial guy have a proper signal meter with him?

[jep]

Just to put this thread to bed, the O/H tried the channel reset which didn't work. The at800 engineer came round, double checked all the frequencies/signals and noted the filter cut the interference by nearly 50%. He left satisfied that all was now right with the aerial and filters, however the issues with certain channels still remained...so she got a digi box and lo-and-behold, everything is now back to normal.

Fair play to the original engineer for identifying the problem, and thanks to all for the thoughts and suggestions.