A very comprehensive reply, it warms my heart to know that there are still people who know what they are talking about :-)
David, you've done all the right things so far, but considering you are in a block of flats try and find out if maybe your neighbour has his cordless phone or wi-fi router just the other side of the wall where your TV is.
Firstly ask your neighbours to find out if it's just you, and like David said if your neighbour has no problems try swapping boxes to see if the problem swaps.
The nearby transmitter shouldn't be interfering with anything, if you are sure the interference isn't more local, for instance your mobile, report the interference to ofcom. If the interference is predictable, every 15mins like you say, then that suggests it isn't mobile phone interference.
Wireless alarm (pir) and smoke detector systems' sensors also TX an "alive" data packet every 15mins to their control panel. Has your building got those? (CF828ES)
Monday 31 January 2011 4:26PM
A very comprehensive reply, it warms my heart to know that there are still people who know what they are talking about :-)
David, you've done all the right things so far, but considering you are in a block of flats try and find out if maybe your neighbour has his cordless phone or wi-fi router just the other side of the wall where your TV is.
Firstly ask your neighbours to find out if it's just you, and like David said if your neighbour has no problems try swapping boxes to see if the problem swaps.
The nearby transmitter shouldn't be interfering with anything, if you are sure the interference isn't more local, for instance your mobile, report the interference to ofcom. If the interference is predictable, every 15mins like you say, then that suggests it isn't mobile phone interference.
Page of interest, radio society beacons that TX every 15mins: Radio propagation beacon - Wikipedia, the free encyclopedia
Some of theses are using frequencies too close for comfort.
Wireless alarm (pir) and smoke detector systems' sensors also TX an "alive" data packet every 15mins to their control panel. Has your building got those? (CF828ES)