Just recently the picture has been either hanging or breaking up. I fiddled with the aerial connections both at the wall and on the rear of the device and it appeared to be making a bad connection. I've just replaced the aerial coax but to no great effect. Most channels are now ok but I can't receive channel 4 at all - I just get the poor or no signal message.
Are these models subject to poor connections, or is it does the symptoms point to something else entirely?