Crosswords2 mins ago
No signal on tv
5 Answers
Just bought a new tv with built in freeview. It has been OK on the whole but tonight the signal on ITV 1 keeps going and there is no picture at the minute.
when I had the freeview set top box and my old analogue tv this didnt happen any ideas ?
when I had the freeview set top box and my old analogue tv this didnt happen any ideas ?
Answers
1 to 5 of 5
Best Answer
No best answer has yet been selected by tamaris. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.
It's a signal strength problem.
Fact 1:
Different receiving devices (whether they be Freeview boxes, TVs, PVRs or whatever else) have different 'sensitivities'. (i.e. their abilities to handle weak signals). So it's not surprising when one device doesn't perform as well as another.
Fact 2:
In an ideal world, the length of the elements of a TV aerial should be exactly calculated in order to ensure that they will 'resonate' with the incoming frequency. Since 'bundles' of Freeview channels (called 'multiplexes') are each broadcast on different frequencies, you theoretically need a different aerial for each 'bundle'. Since that's clearly impractical, your aerial will be a better match to some bundles of channels than to others. (So it unsurprising when only certain channels disappear).
Fact 3:
An aerial fitter would almost certainly tell you that you need to install a better aerial but (fortunately) . . .
Fact 4:
The vast majority of problems such as yours can be fixed by using a cheap signal booster (for about a tenner from any big supermarket).
Chris
Fact 1:
Different receiving devices (whether they be Freeview boxes, TVs, PVRs or whatever else) have different 'sensitivities'. (i.e. their abilities to handle weak signals). So it's not surprising when one device doesn't perform as well as another.
Fact 2:
In an ideal world, the length of the elements of a TV aerial should be exactly calculated in order to ensure that they will 'resonate' with the incoming frequency. Since 'bundles' of Freeview channels (called 'multiplexes') are each broadcast on different frequencies, you theoretically need a different aerial for each 'bundle'. Since that's clearly impractical, your aerial will be a better match to some bundles of channels than to others. (So it unsurprising when only certain channels disappear).
Fact 3:
An aerial fitter would almost certainly tell you that you need to install a better aerial but (fortunately) . . .
Fact 4:
The vast majority of problems such as yours can be fixed by using a cheap signal booster (for about a tenner from any big supermarket).
Chris
That simply proves that either:
(i) your block of flats has got an inefficient distribution system for splitting the signal from the aerial ;
or
(ii) your TV has got very poor sensitivity. (That's far more likely; some of the most expensive brands have got lousy sensitivity).
Unless the ITV1 signal was (through a technical failure) actually missing from the transmitted multiplex - which would have affected all viewers in your area, and not just you - there is no other reason why you should lose a particular channel. I repeat that it's a signal strength problem, which can almost certainly be fixed by using a cheap signal booster.
Chris
(i) your block of flats has got an inefficient distribution system for splitting the signal from the aerial ;
or
(ii) your TV has got very poor sensitivity. (That's far more likely; some of the most expensive brands have got lousy sensitivity).
Unless the ITV1 signal was (through a technical failure) actually missing from the transmitted multiplex - which would have affected all viewers in your area, and not just you - there is no other reason why you should lose a particular channel. I repeat that it's a signal strength problem, which can almost certainly be fixed by using a cheap signal booster.
Chris
-- answer removed --
1 to 5 of 5
