I want to get someone to come and check out the TV setup in the house we're renting at the moment.

Every so often we lose signal, usually on the Mediaworks mux, and it doesn't seem to be weather related. I'd like to check that the aerial is pointing in the correct direction and that everything is ok and not corroded. Also the terminal on the wall where the aerial enters the house seems to be loose (I've tried 3 or 4 different cables and they all fit very loose and if they're not sitting exactly right then the TV loses signal).

I'm in Glenfield on Auckland's North Shore.

Can anyone recommend someone that can check it out and replace anything that needs replacing? I'd prefer to use someone that comes recommended rather than just radomly picking someone.