Why do I get ‘No signal’ on my TV?
QWhen I switched on my Panasonic TV recently, it displayed the message ‘No signal’. My Youview box showed a similar message. I checked all the cables between them and tried stretching a spare cable directly from the TV to the wall socket, but it looks as if everything is dead. At this point I’d usually give up and call an aerial company, but we have a complex setup in our house that boosts the TV signal and routes it via cables to sockets in several rooms. Could this be causing the problem, or is there something else I should try?
ANormally we’d suspect a problem with your aerial, but late last year Freeview made changes to the way it broadcasts channels in parts of south and south east England (see screenshot). Unfortunately, the standard ‘No signal’ message you see when trying to view a channel that’s no longer available isn’t especially helpful, but it’s likely that the channels you’re trying to watch have simply moved.
Check that your signal booster hasn’t accidentally been switched off, then connect the TV directly to the wall socket using the spare cable. Next, choose Setup from the TV’S menu, open the DVB tuning menu and select Update Channel List. The TV should detect the full range of Freeview channels, including any that have moved. If it doesn’t, you might have an aerial problem after all.
Assuming your TV retunes successfully, reattach your aerial cables as they were before and check that the TV still receives a signal. Now switch to Youview, enter the menu, select Settings, TV Channels, and then ‘Retune channels’. Again, your Youview box should find the full range of Freeview channels - it won’t confirm this until the process has finished.